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Globally, Ruben Demetrio (Ruben Demetrio
) is a very rare masculine given name. The forename Ruben Demetrio is characteristic of Latin America and the Caribbean, particularly Bolivia, where it is a rare male name, Chile, where it is a very rare masculine name, and Peru. Much less frequently, Ruben Demetrio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ruben Demetrio | Bolivia, Spain, Ecuador, Chile, Peru |
Llosa, Camarena, and Alvarez Vera