Harys Swyft

Harys Swyft is a background character in the first season. He is played by an unidentified extra and appears in "Fire and Blood." Ser Harys Swyft is a bannerman of House Lannister.

Biography
Ser Harys Sywft is the Knight of Cornfield and the head of House Swyft, a knightly house of the Westerlands. He's the father of Dorna Swyft, the wife of Ser Kevan Lannister

Season 1
Ser Harys is present for a strategy meeting assembled by Lord Tywin Lannister following the defeat and capture of Ser Jaime Lannister in the Battle of the Whispering Wood. Also present are Tyrion Lannister, Ser Kevan Lannister, Lord Leo Lefford, Ser Addam Marbrand, and another bannerman, as well as Tywin's servants. Ser Harys remains quite while the other bannermen discuss their next move. When Tywin grows exasperated and dismisses the council, Ser Harys departs along with everyone present, except for Tyrion, whom Tywin orders to stay

Behind the scenes
The episode doesn't identify any of the bannermen present in the episode and their identities are conjectures based on lines spoken, age of the actor, costume and the overall blocking of the scene, all of them compared to the books. The only two unaccounted bannermen from the books are Ser Harys and Ser Flement Brax. As the latter is a younger character, second son of Lord Andros Brax, it is safe to assume the unidentified bannerman sitting next to Ser Kevan is meant to stand in for Harys Swyft

In the books
In the A Song of Ice and Fire novels, Ser Harys Swyft is present at the council following Jaime's capture and is the one who considers suing for peace. His lines are given to both Kevan Lannister and Leo Lefford.

Tyrion Lannister dismisses Ser Harys as a shameless lickspittle whose only achievement is marrying off his daughter to Kevan Lannister.