House Serrett of Silverhill

House Serrett was born out of the Andal invasion of the Westerlands, when the Kings of the Rock chose to marry their children to the newcomers instead of fighting them to the last.

That mixing of bloodlines gave rise to the house, whose lineage reached beyond the Westerlands: Ser Harras Harlaw's mother was a Serrett.

As Lord Tywin Lannister breaks camp and marches away from Harrenhal, Arya Stark spots the Serrett peacock among the host filing past.

Years later, Brienne of Tarth arrives at the portcullis of Maidenpool and notices that one of the soldiers under Lord Randyll Tarly's command also bears the Serrett emblem.