|Title || Ser|
|Allegiance || House Stackspear|
|Book(s) || A Clash of Kings (mentioned)|
A Storm of Swords (appendix)
A Feast for Crows (appears)
A Dance with Dragons (appendix)
Ser Alyn Stackspear is a knight of 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.