Cognomen 斯衍 (斯衍 ) , in the entire world, is an extremely rare family name. Much more frequently, 斯衍 is the forename as well as the last name.
Siyan, Syan, and Thyan
) , in the entire world, is an extremely rare family name. Much more frequently, 斯衍 is the forename as well as the last name.