What Guillermina means
Guillermina is a girl name of Germanic origin meaning "resolute protector". It comes from Germanic wil (will, desire) + helm (helmet, protection) + -ina. It is pronounced gee-yer-MEE-nah.
Feminine of Guillermo. Rare for newborns; Mina is the traditional nickname.
Nicknames in Mexico: Mina, Guille. Mina is the ending of Guillermina. See the guide to Mexican nicknames.
Popularity: known but uncommon in Mexico.
