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Guillermo

Guillermo means "Resolute" and "Protector" and has Spanish and Teutonic origin.

Updated: April 22, 2025
Updated: April 22, 2025

Boy name origins & meanings

  • Spanish : Resolute, protector
  • Teutonic : Valiant protector

How Popular Is The Name Guillermo

Family name origins & meanings

  • Spanish : from the personal name Guillermo, Spanish equivalent of William.

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