From A Wiki of Ice and Fire
|Allegiance||House Vance of Atranta|
A Storm of Swords (appendix)|
A Feast for Crows (appendix)
Ser Kirth Vance is a knight from House Vance of Atranta and the fourth son of Lord Norbert Vance. He has four brothers; Ser Ronald, Ser Ellery, Ser Hugo and Maester Jon. Kirth is a good friend of Ser Edmure Tully.