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Family name Gregorio Guillermo (Gregorio Guillermo
) , all over the world, is a very rare cognomen. The surname Gregorio Guillermo is habitual in Chile, where it is a very rare surname, and Spain. More prevalently, Gregorio Guillermo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gregorio Guillermo | Costa Rica, Spain, Ecuador, Chile, Peru |
Gallo, Pincay, Gonzalez, Pincay Pisco, and Muñoz Zambrano