|Allegiance:|| House Targaryen|
|Born:||110 AC, at Harvest Hall|
|Died:||131 AC, in the Bloodlands|
|Hair Color:||Dirty blond|
Ser William Selmy, called William Quickfoot, is a knight of House Selmy in the service of House Targaryen. He is the sworn sword/shield of Jaehaerys Targaryen. Jaehaerys is also his squire. He is featured in the short story, The Lost Dragon.