From A Wiki of Ice and Fire
Ser Alyn Stackspear is a knight from House Stackspear and the second son of Lord Selmond Stackspear.
A Clash of Kings
He may have made the wife of Harrenhal's jailer pregnant when Lord Tywin Lannister's army was stationed in the fortress.
A Feast for Crows
Ser Jaime Lannister spotted Ser Alyn riding at a quintain in the yard of the Red Keep.
- ↑ 1.0 1.1 A Clash of Kings, Chapter 30, Arya VII.
- ↑ A Storm of Swords, Appendix.
- ↑ A Feast for Crows, Chapter 16, Jaime II.