I've thought of that, too, Bubba. Clan doesn't always mean "blood tie", particularly in the case of the a "clan" confederation like Clan Chattan. If entire patrynomic and presumably blood-tied groups can seek the protection of the Mackintosh and become a member of Clan Chattan, then an individual can most assurely swear allegiance to any particular clan chief who will accept it and become a member of the Clan.