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Cognomen Silla (Siya
, Silla
, Silya
, among others...) , worldwide, is a common family name. The cognomen Silla is habitual in Guam, where it is quite a common surname, Guinea-Bissau, and Estonia. Measured by absolute frequency, this name is the most popular in India, Philippines, and Algeria. More prevalently, Silla is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Silla, Silya, Siya | Philippines, Tanzania, India, Indonesia, Algeria |
| シラ | Japan |
| Силла | Belarus, Kazakhstan, Russia, Ukraine |
| Сулла | Kazakhstan, Kyrgyzstan, Russia, Ukraine |