Show ContentsGiacomo Surname History

A variety of distinguished and notable names have emerged from the beautiful and historical Italian region of Tuscany, including the notable surname Giacomo. During the Middle Ages, as populations grew and travel between regions became more frequent, the people of Tuscany, who were originally known only by a single name, found it necessary to adopt a second name to identify themselves and their families. This process of adopting fixed hereditary surnames in Italy began in the 10th and 11th centuries, but it was not completed until the modern era. The development of Italian hereditary surnames followed general principles and were characterized by derivatives from one's given name. The patronymic surname, which is derived from the father's given name, was one of the most common name types found in the region of Tuscany. This system of name-making was widely used because it linked well with the existing Feudal System and during the Christian era, many people named their children after saints and biblical figures. The surname Giacomo came from the Italian form of the biblical patriarch, Jacob or in some cases, the name was an Italian given name corresponding to English name James.

Early Origins of the Giacomo family

The surname Giacomo was first found in Florence (Italian: Firenze), where the original branch of the family emerged.

Early History of the Giacomo family

This web page shows only a small excerpt of our Giacomo research. The years 1374, 1498 and 1555 are included under the topic Early Giacomo History in all our PDF Extended History products and printed products wherever possible.

Giacomo Spelling Variations

Enormous variation in spelling and form characterizes those Italian names that originated in the medieval era. This is caused by two main factors: regional tradition, and inaccuracies in the recording process. Before the last few hundred years, scribes spelled names according to their sounds. Spelling variations were the unsurprising result. The variations of Giacomo include DiGiacomo, Giacalone, Giacardi, Giacaz, Giaccaglia, Giaccaglini, Giaccardi, Giaccheri, Giacchetti, Giacchi, Giacchin, Giacchini, Giacco, Giacconi, Giacheri, Giachi, Giachini, Giaco, Giacobazzi, Giacob, Giacobbi, Giacobelli, Giacobini, Giacobo, Giacomazzo, Giacomello, Giacometti, Giacomini, Giacomo, Giacovani, Giacovazzo, Giacovelli, Giappichini, Iachelli, Iachetta, Iachi, Iachino, Iacini, Iaco, Iacobacci, Iacobbi, Iacobelli, Iacobini, Iacobitti, Iacobone, Iacoboni, Iicolo, Iacomelli, Iacometti, Iacomi, Iacomini, Iacomino, Iacomo, Iacomoni, Iacone, Iacovacci, Iacovelli, Iacovini, Iacovo, Iacovne, Iacovucci, Iacuelli, Iacullo, Iacuvelli, Iacuzzi, Iapichelli, Iappichini, Zacchetti, Zacchi, Zacco and many more.

Early Notables of the Giacomo family

Prominent among members of the family was

  • Giacomino da Verona who was a Franciscan friar and a poet of the late 13th century. Dante's Paradiso and the Inferno were the subjects of some of his writing. Giacomo da Riva was a craftsman and paint...
  • Gian Giacomo Medici (1498-1555) was an Italian condottiero who became a noted Spanish general, Duke of Marignano and Marquess of Musso and Lecco in Lombardy

Migration of the Giacomo family

Discovered in the immigration and passenger lists were a number of people bearing the name Giacomo: Peter Giacoletto, who arrived in Indiana in 1892; Caroline Giacinto arrived in Allegheny in 1888; Giuseppe Giacommoni arrived in 1855; Ralph Giacomo arrived in New York in 1884.


Contemporary Notables of the name Giacomo (post 1700) +

  • William J. Giacomo, American Democratic Party politician, Justice of New York Supreme Court 9th District; Elected 2004 1
  • John Giacomo, American Democratic Party politician, Delegate to Democratic National Convention from Wisconsin, 1952; Member of Wisconsin Democratic State Central Committee, 1954; Candidate for Presidential Elector for Wisconsin, 1956 1
  • Vanessa Giácomo (b. 1983), Brazilian actress and screenwriter
  • Pietro Giacomo Porcelli (1872-1943), Italian-born, Australian sculptor who produced many statues and war memorials in Western Australia
  • Julio Giacomo Bonetti (1911-1952), American Major League Baseball right-handed pitcher for the St. Louis Browns and Chicago Cubs (1937-1940)
  • Petro Giacomo Nonis (1927-2014), Italian Roman Catholic bishop of the Roman Catholic Diocese of Vicenza, Italy from 1988 to 2003
  • Giovanni Giacomo Mattei, Italian founder of one powerful branch of the house of Mattei
  • Mosè Giacomo Bertoni (1857-1929), Swiss botanist
  • Giacomo Vianello (1947-2022), Italian professional footballer who played as a defender for San Donà, Fermana, Ternana, Napoli, Atalanta, Palermo, Livorno and Como (1964-1979)
  • Giacomo Capuzzi (1929-2021), Italian Roman Catholic prelate, Bishop of the Roman Catholic Diocese of Lodi (1989-2005)


  1. The Political Graveyard: Alphabetical Name Index. (Retrieved 2015, November 9) . Retrieved from http://politicalgraveyard.com/alpha/index.html


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