|Title|| Lord of Seagard|
River king/King of the Trident
|Book(s)||The World of Ice & Fire (mentioned)|
Lord Petyr Mallister was a Lord of Seagard and head of House Mallister who claimed the title of river king or King of the Trident in the generations after the riverlands were conquered by the Storm King Arlan III Durrandon. Lord Petyr had a brief, inglorious reign before being put down.