Surname Overview
Surname Confirmation and Ethnic Scope
In its Baijiaxing surname section, the page records “枚 (Méi)” as a currently uncommon surname and explicitly states that it occurs among Han, Miao, and Tujia people; it should not be presumed to be exclusively a Han surname.
Reference: 枚姓_枚姓的来源和历史_百家姓
Origins
Two Reported Origins
The source presents two accounts: a descendant of Shang had the surname Mei, according to the Lu Shi; alternatively, “衔枚” was an official title in the Zhou period and the surname came from that office, according to the Shiji Suoyin. The page does not decide between them.
Reference: 枚姓_枚姓的来源和历史_百家姓