A scene from “Unfinished Business”

Erryk: [after Mysaria is arrested on Daemon's orders] Forgive me, my prince, but the lady speaks the truth. She was no agent of the Hightowers.

Daemon: What's it to you?

Erryk: A matter of honor.

Daemon: Was it honor that made you stand by and watch as the Hightowers usurped the throne? You and your traitorous twin?

Erryk: No, my prince. I'm shamed by it. It's why I abandoned the Kingsguard and my brother and came here.

Daemon: I don't care. Aegon was in your grasp. You should've killed him yourself.

Erryk: Arryk and I were named to the Kingsguard at just eight and ten. And we swore the same oath: to defend the whole of the royal family. So what were we to do when they turned against one another?