The meaning of the name Gillian is Youthful, Downy. The origin of the name Gillian is English. This is the culture in which the name originated, or in the case of a word, the language.
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 
