Roderick rose in rebellion against House Teague, when King Humfrey I Teague started to opress those who followed the Old Gods. He was supported by House Vance of Atranta and House Tully of Riverrun. He eventually called on King Arlan III Durrandon, who had married one of his daughters. Arlan intended to restore the Riverlands to the Blackwoods. Roderick was, however, killed during the Battle of Six Kings. His heir was a boy of eight, and the river lords rejected Shiera Blackwood as a potential ruler.