From A Wiki of Ice and Fire
|Book||The Hedge Knight (mentioned)|
Ser Corwin Rogers was a knight from House Rogers during the reign of Daeron II Targaryen.
Corwin was present at the tourney at Ashford Meadow in 209 AC.
Behind the Scenes
The knight's name is a reference to Roger Zelazny, a late friend of George R. R. Martin, and Corwin of Amber, a character from The Chronicles of Amber by Zelazny.