|Title||Lord of Stonehelm|
|Born||In before 259 AC|
He is well past forty. According to his second son, Gulian's fighting days are over.
A Clash of Kings
Gulian's eldest son, Ser Donnel, supports first Renly Baratheon and then Stannis. He is captured during the Battle of the Blackwater and kneels to Joffrey Baratheon. Gulian's second son, Ser Balon, joins Joffrey's Kingsguard after the death of Ser Preston Greenfield.
A Dance with Dragons
Clifford Swann is listed as Lord of Stonehelm. It is unknown if this is a mistake, if George R. R. Martin has changed Gulian's name, or if Clifford has succeeded Gulian over Gulian's eldest son Donnel.