Ahasuerus Fromanteel (circa 25 February 1607 – circa 31 January 1693) was a clockmaker, the first maker of
pendulum clock
A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is an approximate harmonic oscillator: It swings back and forth in a precise time interval dep ...
s in Britain.
Life and work
Fromanteel was baptised in
Norwich
Norwich () is a cathedral city and district of the county of Norfolk, England, of which it is the county town. It lies by the River Wensum, about north-east of London, north of Ipswich and east of Peterborough. The population of the Norwich ...
on 25 February 1607. He was the first of five children born to Leah and Mordecai Fromanteel, a wood turner. The Fromanteels were a highly respected
Flanders
Flanders ( or ; ) is the Dutch language, Dutch-speaking northern portion of Belgium and one of the communities, regions and language areas of Belgium. However, there are several overlapping definitions, including ones related to culture, la ...
family of the sixteenth century. Following
Spanish conquest, members of the family fled across the sea to
East Anglia
East Anglia is an area of the East of England, often defined as including the counties of Norfolk, Suffolk and Cambridgeshire, with parts of Essex sometimes also included.
The name derives from the Anglo-Saxon kingdom of the East Angles, ...
, establishing themselves in
Colchester
Colchester ( ) is a city in northeastern Essex, England. It is the second-largest settlement in the county, with a population of 130,245 at the 2021 United Kingdom census, 2021 Census. The demonym is ''Colcestrian''.
Colchester occupies the ...
, Norwich, and London.
[Anita McConnell, "Fromanteel, Ahasuerus (bap. 1607, d. 1693)", ''Oxford Dictionary of National Biography'', Oxford University Press, 2004, online reference]
Ahasuerus Fromanteel was apprenticed for seven years to a blacksmith, before settling in London in 1629. He began as a crafter of steeple clocks in
East Smithfield, near the
Tower of London
The Tower of London, officially His Majesty's Royal Palace and Fortress of the Tower of London, is a historic citadel and castle on the north bank of the River Thames in central London, England. It lies within the London Borough of Tower Hamle ...
, becoming a member of
Worshipful Company of Blacksmiths in 1631. He made
lantern clocks with
balance wheel escapement
An escapement is a mechanical linkage in mechanical watches and clocks that gives impulses to the timekeeping element and periodically releases the gear train to move forward, advancing the clock's hands. The impulse action transfers energy to t ...
, and spring-driven
table clocks, and joined the
Clockmakers' Guild in 1632. In 1658 Fromanteel were taken before the guild for hiring more apprentices than the rules stipulated, which suggests that the firm was thriving. He developed
microscopes and lenses, building on the work of
Cornelis Drebbel
Cornelis Jacobszoon Drebbel (; 1572 – 7 November 1633) was a Dutch engineer and inventor. He was the builder of the first operational submarine in 1620 and an innovator who contributed to the development of measurement and control systems, opti ...
and Benjamin Worsley in Amsterdam.
Fromanteel married Maria de Bruijne in 1631 and together they had eight children of whom four became clockmakers themselves. From birth Fromanteel was involved with the
Dutch Reformed Church
The Dutch Reformed Church (, , abbreviated NHK ) was the largest Christian denomination in the Netherlands from the onset of the Protestant Reformation in the 16th century until 1930. It was the traditional denomination of the Dutch royal famil ...
, however he and his wife were rebaptised and formally transferred to the Baptist faith.
Pendulum clocks

In 1657 Ahasuerus's son John Fromanteel began studying
pendulum clock
A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is an approximate harmonic oscillator: It swings back and forth in a precise time interval dep ...
s, invented by
Christiaan Huygens
Christiaan Huygens, Halen, Lord of Zeelhem, ( , ; ; also spelled Huyghens; ; 14 April 1629 – 8 July 1695) was a Dutch mathematician, physicist, engineer, astronomer, and inventor who is regarded as a key figure in the Scientific Revolution ...
(1656).
Before the invention of the pendulum clock, timepieces were accurate to only within ten to fifteen minutes a day. The use of the pendulum made for near frictionless time keeping, ensuring that the mechanism lost measurement of only a few seconds a day: a sixty-fold improvement. It was termed a "horological breakthrough". This revolution in time keeping could be said to have caused industrial espionage on a grand scale. Although claimed by Samuel L. Macey to have caused "industrial espionage on a grand scale" it has been argued by Theodore M. Porter, that Macey fails to conform with the normal writings associated with history. That Macey can be accused of rambling and quite often losing the point of an argument he is trying to make. Therefore, there is not much academic scholarship to be associated with Macey's argument that Fromanteel was guilty of any form of espionage.
Following a trip to the Netherlands John and Ahasuerus implemented the new, more accurate pendulum technology. Fromanteel became the first maker of pendulum clocks in England, although this distinction has also been claimed by horologists Richard Harris and
Robert Hooke
Robert Hooke (; 18 July 16353 March 1703) was an English polymath who was active as a physicist ("natural philosopher"), astronomer, geologist, meteorologist, and architect. He is credited as one of the first scientists to investigate living ...
.
Precise measurement of time was critical for disciplines including
maritime navigation and astronomy. Fromanteel used the design for regulating steeple and domestic clocks and sold them from the family house in
Southwark
Southwark ( ) is a district of Central London situated on the south bank of the River Thames, forming the north-western part of the wider modern London Borough of Southwark. The district, which is the oldest part of South London, developed ...
and at the a shop in
Lothbury
Lothbury is a short street in the City of London. It runs east–west with traffic flow in both directions, between Gresham Street's junction with Old Jewry and Coleman Street to the west, and Bartholomew Lane's junction with Throgmorton Stree ...
, which had been a famous retailer of clocks for more than a hundred years. The Fromanteel family sold also weight-driven clocks, watches that needed only a single annual winding and a variety of domestic and industrial engines, selling to the city of
Norwich
Norwich () is a cathedral city and district of the county of Norfolk, England, of which it is the county town. It lies by the River Wensum, about north-east of London, north of Ipswich and east of Peterborough. The population of the Norwich ...
one of his patent fire engines.
In the ''Commonwealth Mercury'' of Thursday 25 November 1658 Fromanteel advertised :
clocks that go exact and keep equaller time than any now made without this regulator (examined and proved before his Highness the Lord Protector by such doctors, whose knowledge and learning is without exception) and are not subject to alter by change of weather, as others are, and may be made to go a week, a month, or a year with once winding up, as well as those that are wound up every day, and keep time as well, and is very excellent for all House Clocks that go either with springs or weights; and also Steeple Clocks that are most subject to differ by change of weather. Made by Ahasuerus Fromanteel, who made the first that were in England. You may have them at his house on the Bankside, in Mosses Alley, Southwark and at the sign of the Mermaid, in Lothbury, near Bartholomew Lane end, London.
He had gained the notice and patronage of "The Lord Protector",
Oliver Cromwell
Oliver Cromwell (25 April 15993 September 1658) was an English statesman, politician and soldier, widely regarded as one of the most important figures in British history. He came to prominence during the Wars of the Three Kingdoms, initially ...
, Britain's interregnum head of state. A popular legend developed that Cromwell himself owned such a clock, however there is little evidence to support this theory.
[''A Clock for the Rooms': The Horological Legacy of the Library Company of Philadelphia'' (2006) Jay Robert Stiefel, pp6-7, Library Company of Philadelphia publishing ] As Mark Denny states in ''Five Machines That Changed the World'', Fromanteel's patent "ushered in the age of English longcase clocks, which dominated horology for a century".
Later years
Fromanteel relocated back in the Netherlands in 1667–76. His son John was left in London to look after the business with Thomas Loomes, a former apprentice, married to Fromanteel's daughter Mary. Following the death of his wife Maria, Ahasuerus Fromanteel wed the widow Sarah Winnock (c. 1660). They lived in
Whitechapel
Whitechapel () is an area in London, England, and is located in the London Borough of Tower Hamlets. It is in east London and part of the East End of London, East End. It is the location of Tower Hamlets Town Hall and therefore the borough tow ...
, where other of the Fromanteel family were established as silk weavers. Fromanteel died in 1693, and was interred at
St Mary Matfelon
St Mary Matfelon church, popularly known as St Mary's, Whitechapel, was a Catholic then after the English Reformation a Church of England parish church on Whitechapel Road, Whitechapel, London (in the county of Middlesex until 1889). It is repea ...
,
Whitechapel
Whitechapel () is an area in London, England, and is located in the London Borough of Tower Hamlets. It is in east London and part of the East End of London, East End. It is the location of Tower Hamlets Town Hall and therefore the borough tow ...
, on 31 January 1693.
This church was destroyed in the
Blitz
Blitz, German for "lightning", may refer to:
Military uses
*Blitzkrieg, blitz campaign, or blitz, a type of military campaign
*The Blitz, the German aerial campaign against Britain in the Second World War
*, several ships of the Prussian, Imperia ...
, and Fromanteel's grave has been lost.
A Fromanteel brand-name of clocks and watches exists today, based in the Netherlands.
References
External links
The Longcase Clock designed by Fromanteel, exhibited at the British MuseumLongcase Clock designed by Fromanteel exhibited at the Victoria and Albert Museum
{{DEFAULTSORT:Fromanteel, Ahasuerus
17th-century English engineers
People from Whitechapel
English clockmakers
17th-century English inventors
English people of Dutch descent
Oliver Cromwell
Horology
English watchmakers (people)
Members of the Dutch Reformed Church
People from Norwich
1607 births
1693 deaths