The name Gillian is of English origin and means "Youthful, Downy." The origin is the culture in which the name originated, or in the case of a word--the language in which it most appears.
Originally a feminine form of Julian. Gillian Anderson, actress.
Gillian is on 1,287 BN name lists Gillian is currently #81 on the BN charts Gillian is currently #835 in U.S. births
Gillian 
