Meaning: Variant of William ‘Resolute protector’
Gender: Male
Pronunciation: Gee-Yair-Moh
Language origin of Gillermo: Germanic
Regional origin of Gillermo: Western Europe
Languages Gillermo is most common: German, Spanish, Italian
Religions Gillermo is most common: Christianity
First letter and sound: G, Gee
Last letter and sound: O, moh
Alternative Spelling: Gyllermo, Gallermo, Gullermo, gillermoe