Guglielmo meaning, boyGuglielmo

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What does Guglielmo mean?

Guglielmo \g(u)-gliel-mo, gug-lie-lmo\ as a boys' name is of Old German derivation, and the name Guglielmo means "determined protector". Guglielmo is a derivative of Guillaume (Old German): French variant of William. An unusual name for baby boys.


Guglielmo has 36 alternative forms via Guillaume, William: Bill, Bille, Billie, Billy, Gillermo, Guilherme, Guillermo, Gwillyn, Gwilym, Liam, Vilhelm, Villem, Wilek, Wiley, Wilhelm, Wilhelmus, Wilkes, Wilkie, Wilkinson, Will, Willem, Willhelmus, Willi, Williams, Williamson, Willie, Willis, Willkie, Wills, Willson, Willy, Wilmer, Wilmot, Wilmott, Wilson and Wim.


Guglielmo is an uncommon first name for men but a very popular surname for both adults and children (#13051 out of 88799, Top 15%). (2000 U.S. Census)

Bill, Billie, Billy (#794 in 2014), Guillermo (#678), Liam (#2), Wiley, Wilhelm, Will (#763), William (#5), Williams, Willie (#722), Willis, Willy, Wilmer and Wilson (#594) are the prominent related forms of Guglielmo (#unlisted) listed in the Top 1000. These boy names were at the peak of their popularity during the years 1920-1929 and have become much less popular since, with forms such as Billy, Guillermo, Will, Willie and Wilson becoming somewhat dated. Liam (#2) is the most contemporarily stylish birth name here. Below is a graphed comparison of the usage of the boy name Guglielmo and affiliated names. (2014 Birth Statistics)

Top 1000 baby names ranking of Bill, Billie, Billy, Guillermo, Liam, Wiley, Wilhelm, Will, William, Williams in U.S.

Top 1000 baby names ranking of Willie, Willis, Willy, Wilmer, Wilson in U.S.

Top 100 baby names ranking of Billy, Liam, Wilhelm, Will, William, Wilmer outside U.S.