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Guillermo meaning and name origin
Guillermo \gu(i)-ller-mo, guill(e)-rmo\ as a boy's name is a variant of Guillaume (Old German) and William (Old German), and the meaning of Guillermo is "will helmet, protection".
The baby name Guillermo sounds like Gillermo and Guilherme. Another similar baby name is Quiller.
View a list of the 2 names that reference Guillermo.
Popularity of Guillermo
Guillermo is a very popular first name for men (#379 out of 1220) and also a very popular surname or last name for all people (#9828 out of 88799). (1990 U.S. Census)
Displayed below is the baby names popularity of the name Guillermo for boys. (2010 statistics) Compare Guillermo with its source forms and related boy baby names.