Cosimo di Giovanni de' Medici (27 September 1389 – 1 August 1464) was an Italian banker and politician who established the
Medici family
The House of Medici ( , ) was an Italian banking family and political dynasty that first began to gather prominence under Cosimo de' Medici, in the Republic of Florence during the first half of the 15th century. The family originated in the Muge ...
as effective rulers of
Florence during much of the
Italian Renaissance. His power derived from his wealth as a banker, and inter-marriage with other powerful and rich families. He was a patron of arts, learning and architecture. He spent over 600,000
gold florins (approx. $500 million inflation adjusted) on art and culture, including
Donatello's David, the first freestanding
nude
Nudity is the state of being in which a human is without clothing.
The loss of body hair was one of the physical characteristics that marked the biological evolution of modern humans from their hominin ancestors. Adaptations related to h ...
male sculpture since antiquity. Despite his influence, his power was not absolute; Florence's legislative councils at times resisted his proposals throughout his life, and he was viewed as first among equals, rather than an autocrat.
[Martines, Lauro (2011). ''The Social World of the Florentine Humanists, 1390–1460''. University of Toronto Press. p. 8.]
Biography
Early life and family business
Cosimo de' Medici was born in
Florence to
Giovanni di Bicci de' Medici
Giovanni di Bicci de' Medici (c. 1360 – February 1429) was an Italian banker and founder of the Medici Bank. While other members of the Medici family, such as Chiarissimo di Giambuono de' Medici, who served in the Signoria of Florence in ...
and his wife
Piccarda Bueri on 27 September 1389. At the time, it was customary to indicate the name of one's father in one's name for the purpose of distinguishing the identities of two like-named individuals; thus, Giovanni was the son of Bicci, and Cosimo's name was properly rendered Cosimo di Giovanni de' Medici. He was born along with a twin brother Damiano, who survived only a short time. The twins were named after
Saints Cosmas and Damian
Cosmas and Damian ( ar, قُزما ودميان, translit=Qozma wa Demyaan; grc-gre, Κοσμᾶς καὶ Δαμιανός, translit=Kosmás kai Damianós; la, Cosmas et Damianus; AD) were two Arab physicians in the town Cyrrhus, and were r ...
, whose feast day was then celebrated on 27 September; Cosimo would later celebrate his own birthday on that day, his "
name day", rather than on the actual date of his birth. Cosimo also had a brother Lorenzo, known as "
Lorenzo the Elder", who was some six years his junior and participated in the family's banking enterprise.

Cosimo inherited both his wealth and his expertise in banking from his father Giovanni, who had gone from being a moneylender to join the bank of his relative Vieri di Cambio de' Medici. Giovanni had been running Vieri's branch in Rome independently since the dissolution of the latter's bank into three separate and independent entities until 1397, when he left
Rome to return to Florence to found his own bank, the
Medici Bank. Over the next two decades, the Medici Bank opened branches in Rome,
Geneva,
Venice
Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 ...
, and temporarily in
Naples; the majority of profits was derived from Rome. The branch manager in Rome was a papal ''depositario generale'' who managed Church finances in return for a commission.
[George Holmes: ''How the Medici became the Pope’s Bankers.'' In: Nicolai Rubinstein (Ed.): ''Florentine Studies. Politics and Society in Renaissance Florence'', London 1968, pp. 357–380; Raymond de Roover: ''The Rise and Decline of the Medici Bank 1397–1494'', Cambridge (Massachusetts)/London 1963, p. 46 f., 198, 203; Volker Reinhardt: ''Die Medici'', 4., revised edition, Munich 2007, S. 21; John R. Hale: ''Die Medici und Florenz'', Stuttgart 1979, p. 13; Alison Williams Lewin: ''Negotiating Survival'', Madison 2003, p. 210 f.] Cosimo would later expand the bank throughout western Europe and opened offices in
London,
Pisa
Pisa ( , or ) is a city and ''comune'' in Tuscany, central Italy, straddling the Arno just before it empties into the Ligurian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for its leaning tower, the cit ...
,
Avignon
Avignon (, ; ; oc, Avinhon, label=Provençal dialect, Provençal or , ; la, Avenio) is the Prefectures in France, prefecture of the Vaucluse Departments of France, department in the Provence-Alpes-Côte d'Azur Regions of France, region of So ...
,
Bruges,
Milan,
and
Lübeck.
The far-flung branches of the Medici rendered it the best bank for the business of the papacy, since it enabled bishoprics in many parts of Europe to pay their fees into the nearest branch, whose manager would then issue a papal license, and the popes could more easily order a variety of wares – such as spices, textiles, and relics – through the bankers' wholesale trade.
In fifteen years, Giovanni would make a profit of 290,791 florins.
In 1415, Cosimo allegedly accompanied the
Antipope John XXIII at the
Council of Constance
The Council of Constance was a 15th-century ecumenical council recognized by the Catholic Church, held from 1414 to 1418 in the Bishopric of Constance in present-day Germany. The council ended the Western Schism by deposing or accepting the res ...
. In 1410, Giovanni lent John XXIII, then simply known as Baldassare Cossa, the money to buy himself the office of
cardinal
Cardinal or The Cardinal may refer to:
Animals
* Cardinal (bird) or Cardinalidae, a family of North and South American birds
**''Cardinalis'', genus of cardinal in the family Cardinalidae
**''Cardinalis cardinalis'', or northern cardinal, the ...
, which he repaid by making the Medici Bank head of all papal finances once he claimed the papacy. This gave the Medici family tremendous power, allowing them, for instance, to threaten defaulting debtors with excommunication. But misfortune hit the Medici Bank in 1415, when the Council of Constance unseated John XXIII, thus taking away the near monopoly they had held on the finances of the
Roman Curia; thereafter, the Medici Bank had to compete with other banks. However, after the Spini Bank of Florence went insolvent in 1420, they again secured priority.
John XXIII, facing the enmity of a church council at which he was accused of a large variety of offenses against the Church, was confined by
Sigismund, Holy Roman Emperor
Sigismund of Luxembourg (15 February 1368 – 9 December 1437) was a monarch as King of Hungary and Croatia ('' jure uxoris'') from 1387, King of Germany from 1410, King of Bohemia from 1419, and Holy Roman Emperor from 1433 until his death in ...
to
Heidelberg Castle
Heidelberg Castle (german: Heidelberger Schloss) is a ruin in Germany and landmark of Heidelberg. The castle ruins are among the most important Renaissance structures north of the Alps.
The castle has only been partially rebuilt since its demoli ...
until the Medici paid his ransom and granted him asylum.
In the same year as John's dethronement (1415), Cosimo was named "
Priore of the Republic
f Florence
F, or f, is the sixth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ef'' (pronounced ), and the plural is ''efs''.
Hist ...
. Later he acted frequently as an
ambassador
An ambassador is an official envoy, especially a high-ranking diplomat who represents a state and is usually accredited to another sovereign state or to an international organization as the resident representative of their own government or sov ...
for Florence and demonstrated a prudence for which he became renowned.

About 1415, Cosimo married
Contessina de' Bardi
Contessina de' Bardi (1390–October 1473), was an Italian noblewoman from the House of Bardi. Her marriage into the House of Medici provided her husband's family with much needed nobility, prestige, and military support as they established th ...
(the daughter of Alessandro di Sozzo Bardi, count of
Vernio, and Camilla Pannocchieschi). The wedding was arranged by his father as an effort to reaffirm relations with the long-standing noble
Bardi family, who had operated one of the richest banks in Europe until its spectacular collapse in 1345; they nevertheless remained highly influential in the financial sphere. Only part of the Bardi family were involved in this marriage alliance, for some of the branches considered themselves the opponents of the Medici clan. The couple had two sons:
Piero the Gouty
Piero di Cosimo de' Medici (the Gouty), (Italian: ''Piero "il Gottoso"'') (1416 – 2 December 1469) was the ''de facto'' ruler of Florence from 1464 to 1469, during the Italian Renaissance.
Biography
Piero was the son of Cosimo de' Med ...
(b. 1416) and
Giovanni de' Medici (b. 1421). Cosimo also had an illegitimate son,
Carlo, by a
Circassian slave, who would go on to become a
prelate.
Giovanni withdrew from the Medici Bank in 1420, leaving its leadership to both of his surviving sons. He left them 179,221 florins upon his death in 1429. Two-thirds of this came from the business in Rome, while only a tenth came from Florence; even Venice offered better returns than Florence. The brothers would earn two-thirds of the profits from the bank, with the other third going to a partner. Besides the bank, the family owned much land in the area surrounding Florence, including
Mugello, the place from which the family originally came.
Florentine politics

Cosimo's power over Florence stemmed from his wealth, which he used to control the votes of office holders in the municipal councils, most importantly the
Signoria of Florence. As Florence was proud of its "
democracy", he pretended to have little political ambition and did not often hold public office. Enea Silvio Piccolomini, Bishop of
Siena and later
Pope Pius II, said of him:

In 1433, Cosimo's power over Florence began to look like a menace to the anti-Medici party led by figures such as
Palla Strozzi and the
Albizzi family, headed by
Rinaldo degli Albizzi Rinaldo degli Albizzi (1370–1442) was an Italian nobleman, a member of the Florentine family of the Albizzi. Along with Palla Strozzi, he was the primary opponent of Cosimo de' Medici's rise in Florence.
Albizzi entered public service for the ...
. In September of that year, Cosimo was imprisoned in the
Palazzo Vecchio
The Palazzo Vecchio ( "Old Palace") is the City hall, town hall of Florence, Italy. It overlooks the Piazza della Signoria, which holds a copy of Michelangelo's ''David (Michelangelo), David'' statue, and the gallery of statues in the adjacent ...
for his part in a failure to conquer the
Republic of Lucca, but he managed to turn the jail term into one of exile. Some prominent Florentines, such as
Francesco Filelfo, demanded his execution, a fate that may have been almost certain without the intervention of the monk
Ambrogio Traversari
Ambrogio Traversari, also referred to as Ambrose of Camaldoli (138620 October 1439), was an Italian monk and theologian who was a prime supporter of the papal cause in the 15th century. He is honored as a saint by the Camaldolese Order.
Biography ...
on his behalf.
Cosimo traveled to
Padua and then to
Venice
Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 ...
, taking his bank along with him and finding friends and sympathizers wherever he went for his willingness to accept exile rather than resume the bloody conflicts that had chronically afflicted the streets of Florence. Venice sent an envoy to Florence on his behalf and requested that they rescind the order of banishment. When they refused, Cosimo settled down in Venice, his brother Lorenzo accompanying him. However, prompted by his influence and his money, others followed him, such as the architect
Michelozzo
Michelozzo di Bartolomeo Michelozzi (1396 – 7 October 1472) was an Italian architect and sculptor. Considered one of the great pioneers of architecture during the Renaissance, Michelozzo was a favored Medici architect who was extensively empl ...
, whom Cosimo commissioned to design a library as a gift to the Venetian people. Within a year, the flight of capital from Florence was so great that the decree of exile had to be lifted. Cosimo returned a year later, in 1434, to influence the government of Florence (especially through the
Pitti and
Soderini families) for the last 30 years of his life of 75 years.
Cosimo's time in exile instilled in him the need to quash the factionalism that resulted in his exile in the first place. In order to do this, he instigated a series of constitutional changes with the help of favorable priors in the Signoria to secure his power through influence.
Following the death of
, who had ruled the
Duchy of Milan
The Duchy of Milan ( it, Ducato di Milano; lmo, Ducaa de Milan) was a state in northern Italy, created in 1395 by Gian Galeazzo Visconti, then the lord of Milan, and a member of the important Visconti family, which had been ruling the city sin ...
from 1412 until his death in 1447, Cosimo sent
Francesco I Sforza
Francesco I Sforza (; 23 July 1401 – 8 March 1466) was an Italian condottiero who founded the Sforza dynasty in the duchy of Milan, ruling as its (fourth) duke from 1450 until his death. In the 1420s, he participated in the War of L' ...
to establish himself in Milan to prevent an impending military advance from the
Republic of Venice. Francesco Sforza was a ''
condottiere'', a
mercenary soldier who had stolen land from the papacy and proclaimed himself its lord. He had yearned to establish himself at Milan as well, an ambition that was aided by the fact that the current Visconti head lacked legitimate children save for a daughter, Bianca, whom Sforza ultimately married in November 1441 after a failed attempt at winning her hand from her father. The resultant balance of power with Milan and Florence on the one side and Venice and the
Kingdom of Naples
The Kingdom of Naples ( la, Regnum Neapolitanum; it, Regno di Napoli; nap, Regno 'e Napule), also known as the Kingdom of Sicily, was a state that ruled the part of the Italian Peninsula south of the Papal States between 1282 and 1816. It was ...
on the other created nearly half a century of peace that enabled the development of the
Renaissance in Italy. However, despite the benefits to Florence from keeping Venice at bay, the intervention in Milan was unpopular among Cosimo's fellow citizens, primarily because they were called upon to finance the Sforza succession. The Milanese made a brief attempt at democracy before Sforza was finally acclaimed duke by the city in February 1450.
In terms of foreign policy, Cosimo worked to create peace in northern Italy through the creation of a balance of power between
Florence,
Naples, Venice and
Milan during the
wars in Lombardy between 1423 and 1454 and the discouragement of outside powers (notably the French and the
Holy Roman Empire) from interfering in Italian affairs. In 1439, he was instrumental in convincing Pope
Eugene IV
Pope Eugene IV ( la, Eugenius IV; it, Eugenio IV; 1383 – 23 February 1447), born Gabriele Condulmer, was head of the Catholic Church and ruler of the Papal States from 3 March 1431 to his death in February 1447. Condulmer was a Venetian, and ...
to move the
Ecumenical
Ecumenism (), also spelled oecumenism, is the concept and principle that Christians who belong to different Christian denominations should work together to develop closer relationships among their churches and promote Christian unity. The adjec ...
Council of Ferrara to Florence. The arrival of many notable
Byzantine figures from the
Eastern Roman Empire, including Emperor
John VIII Palaiologos, for this event further inspired the growing interest in ancient Greek arts and literature.
Death

On his death in 1464 at
Careggi
The Villa Medici at Careggi is a patrician villa in the hills near Florence, Tuscany, central Italy.
History
The villa was among the first of a number of Medici villas, notable as the site of the Platonic Academy founded by Cosimo de' Medici, w ...
, Cosimo was succeeded by his son Piero, father of
Lorenzo the Magnificent. After Cosimo's death, the
Signoria awarded him the title ''
Pater Patriae'', "Father of the Fatherland", an honour once awarded to
Cicero, and had it carved upon his tomb in the
Church of San Lorenzo.
Patronage
Cosimo de' Medici used his personal fortune to control the Florentine political system and to sponsor orators, poets and philosophers, as well as a series of artistic accomplishments.
Arts

Cosimo was also noted for his patronage of culture and the arts during the Renaissance and spent the family fortune liberally to enrich the civic life of Florence. According to
Salviati's ''Zibaldone'', Cosimo stated: "All those things have given me the greatest satisfaction and contentment because they are not only for the honor of God but are likewise for my own remembrance. For fifty years, I have done nothing else but earn money and spend money; and it became clear that spending money gives me greater pleasure than earning it."
Additionally, his patronage of the arts both recognized and proclaimed the humanistic responsibility of the civic duty that came with wealth.
Cosimo hired the young
Michelozzo Michelozzi
Michelozzo di Bartolomeo Michelozzi (1396 – 7 October 1472) was an Italian architect and sculptor. Considered one of the great pioneers of architecture during the Renaissance, Michelozzo was a favored Medici architect who was extensively empl ...
to create what is today perhaps the prototypical Florentine
palazzo, the austere and magnificent
Palazzo Medici
The Palazzo Medici, also called the Palazzo Medici Riccardi after the later family that acquired and expanded it, is a Renaissance palace located in Florence, Italy. It is the seat of the Metropolitan City of Florence and a museum.
Overview
T ...
. The building still includes, as its only 15th-century interior that is largely intact, the Magi Chapel frescoed by
Benozzo Gozzoli, completed in 1461 with portraits of members of the Medici family parading through Tuscany in the guise of the Three Wise Men. He was a patron and confidante of
Fra Angelico,
Fra Filippo Lippi, and
Donatello, whose famed
David and
Judith Slaying Holofernes were Medici commissions. His patronage enabled the eccentric and bankrupt architect
Brunelleschi to complete the dome of
Santa Maria del Fiore (the "
Duomo") in 1436.
Libraries
In 1444, Cosimo de' Medici founded the first public library in Florence, at
San Marco, which was of central importance to the
humanist movement in Florence during the Renaissance. It was designed by
Michelozzo
Michelozzo di Bartolomeo Michelozzi (1396 – 7 October 1472) was an Italian architect and sculptor. Considered one of the great pioneers of architecture during the Renaissance, Michelozzo was a favored Medici architect who was extensively empl ...
, a student of
Lorenzo Ghiberti who later collaborated with
Donatello and was also a good friend and patron to Cosimo. Cosimo contributed the funds necessary to repair the library and provide it with a book collection, which people were allowed to use at no charge. "That Cosimo de'Medici was able to finance the construction of such a site placed him in a privileged position of leadership in the city. He hand-selected those individuals who were given access to this laboratory of learning, and, through this social dynamic, he actively shaped the politics of the Republic." He also commissioned Michelozzo to design a library for his grandson, Lorenzo de' Medici. His first library, however, was designed by Michelozzo while the two were in Venice, where Cosimo had been temporarily exiled. In 1433, in gratitude for the hospitality of that city, he left it as a gift, his only such work outside Florence.
His libraries were noted for their Renaissance style of architecture and distinguished artwork.
Cosimo had grown up with only three books, but by the time he was thirty, his collection had grown to 70 volumes. After being introduced to humanism by a group of
literati
Literati may refer to:
*Intellectuals or those who love, read, and comment on literature
*The scholar-official or ''literati'' of imperial/medieval China
**Literati painting, also known as the southern school of painting, developed by Chinese liter ...
who had asked for his help in preserving books, he grew to love the movement and gladly sponsored the effort to renew Greek and Roman civilization through literature, for which book collecting was a central activity. "Heartened by the romantic wanderlust of a true bibliophile, the austere banker even embarked on several journeys in the hunt for books, while guaranteeing just about any undertaking that involved books. He financed trips to nearly every European town as well as to Syria, Egypt, and Greece organized by
Poggio Bracciolini, his chief book scout."
He engaged 45 copyists under the bookseller
Vespasiano da Bisticci to transcribe manuscripts and paid off the debts of
Niccolò de' Niccoli after his death in exchange for control over his collection of some 800 manuscripts valued at around 6,000 florins. These manuscripts that Cosimo acquired from Niccoli would later be the cornerstone of the
Laurentian Library
The Laurentian Library (Biblioteca Medicea Laurenziana or BML) is a historic library in Florence, Italy, containing more than 11,000 manuscripts and 4,500 early printed books. Built in a cloister of the Medicean Basilica di San Lorenzo di Firenze ...
, a library in Florence founded by Cosimo's grandson,
Lorenzo de' Medici.
Philosophy
In the realm of philosophy, Cosimo, influenced by the lectures of
Gemistus Plethon, supported
Marsilio Ficino
Marsilio Ficino (; Latin name: ; 19 October 1433 – 1 October 1499) was an Italian scholar and Catholic priest who was one of the most influential humanist philosophers of the early Italian Renaissance. He was an astrologer, a reviver of ...
and his attempts at reviving
Neo-Platonism. Cosimo commissioned Ficino's Latin translation of the complete works of
Plato (the first ever complete translation) and collected a vast library that he shared with intellectuals such as
Niccolò de' Niccoli and
Leonardo Bruni. He also established a
Platonic Academy in Florence in 1445. He provided his grandson Lorenzo de' Medici with an education in the
studia humanitatis
The Latin school was the grammar school of 14th- to 19th-century Europe, though the latter term was much more common in England. Emphasis was placed, as the name indicates, on learning to use Latin. The education given at Latin schools gave gre ...
. Cosimo certainly had an influence on Renaissance intellectual life, but it was Lorenzo who would later be deemed to have been the greatest patron.
Fictional depictions
Roberto Rossellini's three-part television miniseries ''
The Age of the Medici'' (1973) has Cosimo as its central character (the original Italian title is ''L'età di Cosimo de' Medici'', meaning "The Age of Cosimo de' Medici"). The first part, ''The Exile of Cosimo'', and the second part, ''The Power of Cosimo'', focus on Cosimo's political struggles and on his patronage of the arts and sciences in Florence. Cosimo is portrayed by Italian actor Marcello Di Falco.
Frank Spotnitz's eight-part television series ''
Medici: Masters of Florence'' (2016) depicts the rise of the powerful banking family after the death of
Giovanni (played by
Dustin Hoffman), as his son Cosimo (
Richard Madden) takes over as head of the family. The sixteen-part sequel, ''
Medici'' (2019–2020), follows the career of Cosimo's grandson,
Lorenzo the Magnificent (
Daniel Sharman).
See also
*
History of Florence
*
Villa Medici at Cafaggiolo
The Villa Medicea di Cafaggiolo is a villa situated near the Tuscan town of Barberino di Mugello in the valley of the River Sieve, some 25 kilometres north of Florence, central Italy. It was one of the oldest and most favoured of the Me ...
References
Further reading
*
Burckhardt, Jacob, ''The Civilization of the Renaissance in Italy'' (1860) 1878.
* Connell, William. ''Society and Individual in Renaissance Florence'', 2002.
* Cook, Jon (2003). "Why Renaissance? Why Florence?" ''History Review'', 47, 44–46.
* De Roover, R. ''The Rise and Decline of the Medici Bank, 1397–1494.'' Cambridge, MA: Harvard University Press, 1963.
*
Durant, Will (1953). ''The Renaissance.''
The Story of Civilization. New York: Simon and Schuster. 1953.
* for the Palazzo Medici.
* Kent, Dale. ''Cosimo De' Medici and the Florentine Renaissance: The patron's oeuvre''. New Haven: Yale University Press, 2000.
* Martin Roberts, ''Italian Renaissance''. Longman, 1992.
* Meehan, William F. III (2007). "The Importance of Cosimo de Medici in Library History." Indiana libraries, 26(3), 15–17. Retrieved from:
http://hdl.handle.net/1805/1579
* Parks, Tim. ''Medici Money: Banking, Metaphysics, and Art in Fifteenth-Century Florence''. New York: W. W. Norton, 2005.
*
*
External links
The Medici Family.com: Cosimo IInternet Archive.org: Cosimo de' Medici (1899)– ''biography by K. Dorothea Ewart Vernon''.
* �
BIVIO: Biblioteca Virtuale On-Line: Biography in "Le vite" from Vespasiano da Bisticci
{{DEFAULTSORT:Medici, Cosimo 01
Rulers of Florence
Italian bankers
Medieval bankers
1389 births
1464 deaths
15th-century people of the Republic of Florence
Cosimo 01
Italian nobility
Ambassadors of the Republic of Florence
Burials at San Lorenzo, Florence
15th-century rulers in Europe
Book and manuscript collectors
Italian art patrons
15th-century Italian businesspeople