Show ContentsGiacomo History, Family Crest & Coats of Arms

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.

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 year 1374 is included under the topic Early Giacomo History in all our PDF Extended History products and printed products wherever possible.

Giacomo Spelling Variations

In comparison with other European surnames, Italian surnames have a surprising number of forms. They reflect the regional variations and the many dialects of the Italian language, each with its own distinctive features. For example, in Northern Italy the typical Italian surname suffix is "i", whereas in Southern Italy it is "o". Additionally, spelling changes frequently occurred because medieval scribes and church officials often spelled names as they sounded rather than according to any specific spelling rules. The spelling variations in the name 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...

Migration of the Giacomo family

Early records show that people bearing the name Giacomo arrived in North America quite early: 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
  • 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)
  • Giacomo Babini (1929-2021), Italian Roman Catholic prelate, Bishop of Pitigliano-Sovana-Orbetello from 1991 to 1996 and Grosseto from 1996 to 2001


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


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