From A Wiki of Ice and Fire
|Title||Lord of Stonehelm|
|Book||A Dance with Dragons (appendix)|
Clifford Swann is a member of House Swann. In the appendix of A Dance with Dragons he is listed as the Lord of Stonehelm, despite the fact that the earlier established Lord of Stonehelm, Lord Gulian Swann, had two sons, Donnel and Balon, the former of which is still eligible to inherit.