Spoiler-free version 

Faraday is very old, but he doesn’t look it at all. He has lived on nearly every continent, and been given a name by just about every culture. Most folk assume he is Fae, and he lets that be the bulk of what he tells people.

He does not use his true name, because that would give him away too quickly. Faraday likes his new name, he picked it himself and wishes to distance himself from an ex who takes it upon herself to ‘test’ any new lovers.

Eventually he will reveal his identity to his new companions… but not any time soon.