Armigerous Clans

[Bugbear]

... If the chief of clan "X" adopted a child, that child would not be able to inherit the chiefship; it would pass to a cousin, brother, or nephew of the chief. In other words it would go to a "blood relative" of the chief, not a "stranger in blood". The adopted child could inherit everything else (except the undifferenced arms of his adopted father), but not the chiefship of the clan. ...

Ah! That clears it all up for me; it is only through the genetic or "blood relative." Thank you.