Best I could offer is probably a MCHB nephew/cousin on Ewart Fraser's side of the family, any of his siblings are wide open to do with what you please! (If they are aggressively anti-werewolf and/or particularly stuffy Ewart and said sibling can hate each other, that's fine too, since Ewart is related by marriage to the Potts and the Belbys and probably has a softer werewolf stance xD)