Corrected entry: In the zoo scene, where Henry meets Alba for the first time, he already knows her name, and addresses her as such. She never reveals her name to Henry. He had just time travelled back from a time when he and Clare were still undecided and searching for names.
nipplezipper
8th Sep 2016
Correction: It is a self fulfilling prophecy. As soon as he says her name it becomes her name. He goes back and tells Claire that her name is Alba.