Last name 夏兰 (Ciaran 
, 夏兰 , Xialan ) , all over the world, is a rare surname. The cognomen 夏兰 is characteristic of Ireland, where it is quite a rare surname, Uruguay, where it is a rare surname, and Hungary. Not in comparison with a country's population, it is the most numerous in China, Ireland, and Spain. Much more prevalently, 夏兰 is the forename as well as the last name.