Guillermo: Last Name Origin and Family Crest

A coat of arms belongs to a particular family line rather than to everyone named Guillermo, so the heraldry linked to Guillén is a starting point, not an automatic right.

Meaning of the name

Many Guillermo families will find their roots under Guillén, the form most records use. It grew out of a personal name: “from the name Guillermo”.

Spelling and variants

Guillermo is built on the same root as Guillén, with the ending -rmo. Other spellings include Guillem.

Want more than a summary? See the Guillermo family name pack.