The ''Catalogus Baronum'' ("Catalogue of the Barons") is a collection of registers of the military obligations owed by the

baron Baron is a rank of nobility or title of honour, often Hereditary title, hereditary, in various European countries, either current or historical. The female equivalent is baroness. Typically, the title denotes an aristocrat who ranks higher than ...

s of the

Kingdom of Sicily The Kingdom of Sicily (; ; ) was a state that existed in Sicily and the southern Italian peninsula, Italian Peninsula as well as, for a time, in Kingdom of Africa, Northern Africa, from its founding by Roger II of Sicily in 1130 until 1816. It was ...

. The collection was compiled in 1322 under the Angevin dynasty. It contains three distinct registers from different periods and covering different regions of the kingdom. The first, the ''Quaternus magne expeditionis'', was originally compiled under the Norman king Roger II in 1150–51, then revised by his grandson, William II in 1167–68. It listed the

fief A fief (; ) was a central element in medieval contracts based on feudal law. It consisted of a form of property holding or other rights granted by an overlord to a vassal, who held it in fealty or "in fee" in return for a form of feudal alle ...

s of the crown in the Principality of Capua, the

Duchy of Apulia The County of Apulia and Calabria (), later the Duchy of Apulia and Calabria (), was a Norman state founded by William of Hauteville in 1043, composed of the territories of Gargano, Capitanata, Apulia, Vulture, and most of Campania. It becam ...

, and the Abruzzi and detailed the services each owed. The second register was composed under William around 1175. It lists only the

knight A knight is a person granted an honorary title of a knighthood by a head of state (including the pope) or representative for service to the monarch, the church, or the country, especially in a military capacity. The concept of a knighthood ...

s of Aquino, Arce, and Sora. The third register, the ''Pheudatarii iusticiaratus Capitanatae'', is that of the Swabian king Frederick II from 1239–40. It lists only the feudatories of the Capitanate. The single manuscript, known as Angevin Register 1322 A (242), was kept in the State Archives of Naples until 1943, when it was destroyed along with many other documents when occupying German troops set fire to the archives during the

Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

.On the combat in and around Naples in September 1943, see Four days of Naples. It was itself based on a now-lost late 13th-century document, the so-called "Swabian Copy", which contained a copy of the original ''Quaternus'' alongside Frederick II's register. The ''

editio princeps In Textual scholarship, textual and classical scholarship, the ''editio princeps'' (plural: ''editiones principes'') of a work is the first printed edition of the work, that previously had existed only in manuscripts. These had to be copied by han ...

'' of the collection was published in 1653 by Carlo Borrelli, who also gave the document the name by which it is known, ''Catalogus Baronum''. A modern critical edition by Evelyn Jamison was published in 1972 based on surviving photostats.

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Further reading