US Popularity Rank: 11480

Origin: German

Meaning: Resolute protector

Guillaume is the French form of the name William. As such, it shares its root German etymology, that of “resolute protector.” Over the years, several aristocrats, authors, sportspeople, and world leaders by the same name have lent Guillaume credibility, status, and integrity. With a lengthy list of notable personalities to look up to, your little one will be emulating their namesakes in no time. Who knows, maybe they’ll even be inspired to raise the bar for the next generation!