Resolute protector
The French form of William, derived from the Germanic elements 'wil' (will or desire) and 'helm' (helmet or protection). It has been a prestigious name in France since the medieval era, famously borne by William the Conqueror.
Fewer than 5 boys were named Guillaume in 2025.
Influential French poet and art critic
César Award-winning French actor and director
Medieval French composer and poet
Bestselling French novelist
William the Conqueror, first Norman King of England
US births per 5-year period, 1990–present (SSA data).
