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GuillermoRate Guillermo: Do you like this name?
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Meaning and name origin
Guillermo \gu(i)-ller-mo, guill(e)-rmo\ as a boy's name is of Old German origin, and the meaning of Guillermo is "determined protector". Guillermo is a variant of Guillaume (Old German): French variant of William.
Guillermo is a very popular first name for males (#379 out of 1220) and also a very popular surname or last name for all people (#9828 out of 88799) (2000 U.S. Census).
Displayed below is the baby name popularity of the name Guillermo for boys (2015 statistics).
Displayed below is a comparison of the popularity of the boy name Guillermo and its source forms. Variation forms ranked in the Top 1000/100 are Guillermo and William. (2015 statistics).
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