Ser Forrest Tarly, also known as the Branch Knight, is a minor character in the fourth, fifth, sixth, seventh and eighth season of Game of Thrones. He is a member of House Tarly and the cousin of Lord Randyll Tarly and Ser Darron Tarly. Since Robert's Rebellion, he has lived in the Vale in the service of House Arryn.
He is married to Ayleen Ruthermont and has one daughter with her, Mya
Forrest is one of the Knights escorting Lord Petyr Baelish and Sansa Stark to Winterfell. When Brienne of Tarth tries to take Sansa with her, Forrest is quick to flee with Sansa.
Forrest stays in Winterfell until Lord Baelish leaves for Kings Landing, but is sent back to the Vale to watch over Lord Robin Arryn.
Forrest aids Lord Randyll Tarly and Jaime Lannister against Daenerys Targaryen.