Cognomen 怀兰 (怀兰 
, Huailan , Wyland 
) , around the world, is quite a rare surname. The cognomen 怀兰 is habitual in the United States, where it is a rare surname, New Zealand, and Netherlands, where it is a very rare surname. Measured by absolute frequency, it is commonest in the United States, China, and Germany. Likewise, 怀兰 is the forename as well as the last name.