Ardrian Celtigar
From A Wiki of Ice and Fire
Lord Ardrian Celtigar is an old man, lord of house Celtigar. He is known for his avarice and his wealth.
In ACOK
As a liege of Dragonstone, he supports Stannis Baratheon, but without real enthusiasm. He is captured at the Battle of the Blackwater and submits to Joffrey Baratheon.
In ASOS
He stays in King's Landing in fear of Stannis reprisals. He is present at Joffrey Baratheon and Margaery Tyrell's wedding and testifies against Tyrion Lannister at his trial.