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Cognomen Силай (Silai , Silay , Xilai ) , all around the world, is quite a rare family name. The last name Силай is characteristic of Cyprus, where it is quite a rare surname, Myanmar, where it is a rare surname, and Romania. Measured by absolute frequency, it is commonest in India, Philippines, and Turkey. Also, Силай is the forename as well as the last name.