House Castor of King's Landing

House Castor of King's Landing is a cadet branch of House Castor of Casterly Rock. Founded in 420AR, the house is the current ruling house in Westeros.

Background
House Castor of King's Landing was founded in 420 AR as a cadet branch of House Castor. The House was created when Lord Ryse IV Castor wed the Maya Rushing, who at the time was the heir to the Iron Throne. When she became Queen, Ryse took the title of King, and their children were Princes and Princesses of House Castor.