The Esoteric Order of Salem is a guild! I'm the only active member, I'm afraid.
Also, I'm not quite sure if that plot would work. I mean, if Lucian doesn't even know he's a demon, then I'm pretty sure nobody else would as well. Besides, with relatively no knowledge of his powers, he'd get completely owned by Lynch.
Not to mention it wouldn't exactly be in character for Lynch to not kill him. The only two possibilities that exist for Lucian is swift, unexpected death, or capture.