[quote=FortunesFaded]
Hm.. That is an interesting argument. While I agree that Solterra could not ever become the head of House Trisch (due to no blood-relation), Overlord is merely a title. A title that Trisch family members have always had, but a title nonetheless. If he were to succeed in killing Rone, and established himself under the name of "Overlord", he would technically be the overlord.
[/quote]

'Overlord' is, in our case, a title which infers a very specific meaning: dominion over all of the kings of Lundland. If all of the Trisch were dead, Lord Solterra sat safely in Bolgaz, and every single King in the land bowed to him and accepted him as their suzerain, then Solterra would be Overlord—in the sense that he'd have demolished the Trisch's title of Overlord, and then built his own title over top of its remains.

But that is exactly as impossible as Solterra becoming a man of Trisch blood.