What does Guglielmo mean?
Guglielmo /gu-gliel-mo/ [3 sylls.] as a boys' name is of Old German derivation, and the name Guglielmo means "determined protector". Guglielmo is a version of Guillaume (Old German): French form of William. Compare last name Guglielmi.
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.Kreatif forms: Gaglielmo, Gayglielmo, Gugliello. [more]
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. 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 (not ranked) listed in the Top 1000. Variants like Wilmott are seldom used. These boy names were at the peak of their popularity during the years 1920-1929 (usage of 0.5873%) and have become much less popular since (usage 0.2295%, down 60.9%), 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)