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What does Guglielmo mean?

Guglielmo /gu-gliel-mo/ as a boys' name is of Old German derivation, and the name Guglielmo means "determined protector". Guglielmo is a version, with the prefix Gug-, of Guillaume (Old German): French form of William.


Guglielmo has 1 alternative form via Guillaume, William: Guillermo.

Kreatif forms:
(male) Guglielgi, Gugliellon, ..

(female) Guglielga, Guglielyn, ..

How popular is Guglielmo?

Guglielmo is an uncommon first name for men but a very popular surname for both adults and children (#13820 out of 150436, Top 9%). (2000 U.S. Demographics)


Ranking and usage % can show different trends depending on the distribution of names that year.

Guillermo (#678 in recent rankings) and William (#5) are the prominent related forms of Guglielmo (not ranked) listed in the Top 2000. These forms of Guglielmo were at the peak of their popularity during the years 1880-1889 (adoption of 7.75%) and have become much less popular since (adoption 0.9%, 88.4%). Below is a graphed comparison of the history of the boy name Guglielmo and affiliated names. (2014 Birth Statistics)

Top 2000 baby names ranking of Guillermo, William in U.S.

Top 100 baby names ranking of William outside U.S.

Similar Names


Recommended names are Angelmo, Gabriello, Galileo, Gamliel (see Gamaliel), Gillermo, Gualterio, Gualtiero, Guilherme and Guriel. Like Guglielmo, these names are not commonly used.