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Cognomen Lày (Lày
) , throughout the world, is quite a rare last name. The cognomen Lày is habitual in South-eastern Asia, particularly Myanmar, where it is quite a rare surname, and Vietnam, where it is a very rare surname. Very seldom, Lày is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lày | Myanmar, Vietnam |