Writing - Rewhan 2/?
Genetically, Rewhan is a 'northman'; he wasn't born in Shahazarad. He was adopted by the Guild of Alchemists, specifically its (at the time) Deputy Guildmaster.
Not knowing his birth family doesn't bother Rewhan at all. He had an enormous family of guildbrothers and guildsisters growing up, and wouldn't trade those experiences for anything in the world.
(I HATE the 'blood family is intrinsically better than adopted family' trope btw)