Cognomen 유연 (유연 , Yu-Yeon ) , around the globe, is an extremely rare last name. Much more frequently, 유연 is the forename as well as the last name.
Yuyeon, 有然, and 柳然
, Yu-Yeon 
) , around the globe, is an extremely rare last name. Much more frequently, 유연 is the forename as well as the last name.