I'm here to keep up my oaths. I am currently pledged to protect Lady Sansa and her sister Arya Stark. I've worked with Ser Jaime Lannister but it didn't go well for either of us. Ser Jaime did give me a sword from the endeavor that I have used multiple times. I served in the war against the dead and saved multiple lives. Just before the war, I was knighted by Ser Jaime.