Ryse IV Castor

Ryse IV Castor was the first King of Westeros under House Castor. He was the son of Lord Haezyn II Castor. He married Maya Rushing in 418 AR and when her father passed in 420 AR, she became Queen and he became King. He was styled as '''Ryse of House Castor, the Fourth of His Name, King of Westeros, Lord f King's Landing, and Protector of All Men. ''' In 427 AR, he also began holding the titles of Lord Paramount of the Westerlands, Lord of Casterly Rock and Protector of the West.

He is the founder of the cadet branch, House Castor of King's Landing.