Resolute protector
Guilherme is the Portuguese form of William. It is derived from the Germanic elements 'wil', meaning desire or will, and 'helm', meaning helmet or protection. It remains a classic and highly popular choice in Lusophone countries like Brazil and Portugal.
About 8 boys were named Guilherme in 2025.
Brazilian professional footballer
Brazilian actor and director
Brazilian actor
Naturalized Russian professional football goalkeeper
US births per 5-year period, 1990–present (SSA data).
