Meaning: William, meaning resolute protector
Gender: Male
Pronunciation: Gee-Yer-Moh
Language origin of Guillermo: Germanic
Regional origin of Guillermo: Northern Europe
Languages Guillermo is most common: English
Religions Guillermo is most common: Christianity
First letter and sound: G, Gee
Last letter and sound: O, yer
Alternative Spelling: Guillerm, Guillermo, Guilherme