What does Guillaume mean?
Guillaume /guil-lau-me/ as a boys' name is pronounced gee-OHM. It is of Old German origin, and the meaning of Guillaume is "determined protector". French variant of William. French poet Guillaume Apollinaire.
Guillaume has 31 more alternative forms via William: Bill▼, Bille, Billie▼, Billy▼, 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: Gillaume, Guillauge, Guillaupe. [more]
How popular is Guillaume?
Guillaume is a rare given name for men but a very popular last name for both adults and children (#11719 out of 150436, Top 8%). (2000 U.S. Census)
Bill, Billie, Billy (#794 2 years ago), Guillermo (#678), Liam (#2), Wiley, Wilhelm, Will (#763), William (#5), Williams, Willie (#722), Willis, Willy, Wilmer and Wilson (#594) are the popular alternative forms of Guillaume (not ranked). Other variants, like Wilhelmus, are seldom used. Usage of these relations of Guillaume reached its peak during 1920-1929 (average #412) and is now much reduced (#770, ▼60.9%). William is the continual favorite, though Liam is currently the more favored form, while forms such as Billy, Guillermo, Will, Willie and Wilson are no longer trendy. Below is a graphed analysis of the usage of Guillaume and corresponding names. (Top 1000 Baby Names Records, 2014)