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Cognomen Alcayro (Alcayro ) , worldwide, is a very rare family name. The cognomen Alcayro is characteristic of South-eastern Asia, particularly Philippines, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Alcayro | Philippines |
Paul, Merle, Rizal, Marica, Adrian, Renlyn, Meriz Sheree, Katherine, and Carl Waldo