|Title|| Lord of Seagard|
|Book(s)|| A Game of Thrones (appears)|
A Clash of Kings (mentioned)
A Storm of Swords (appears)
A Feast for Crows (mentioned)
A Dance with Dragons (appendix)
Appearance and Character
- See also: Images of Jason Mallister
Lord Jason is a renowned tourney knight, participating in several tourneys over the years. He was defeated in the tourney at Storm's End by Prince Rhaegar Targaryen and Ser Barristan Selmy. As a bannerman to Lord Hoster Tully, he attended the wedding of Hoster's daughter, Catelyn, to Lord Eddard Stark at Riverrun, where his gifts were lavish.
During Robert's Rebellion, Jason fought in the Battle of the Trident, slaying three of Rhaegar's bannermen, according to semi-canon sources to avenge the death of his brother. During Greyjoy's Rebellion in 289 AC, he killed Rodrik Greyjoy beneath the walls of Seagard, throwing the ironborn reavers back into the sea.
After the conclusion of Greyjoy's Rebellion, King Robert I Baratheon ordered a tourney at Lannisport to celebrate his victory. There, Lord Jason was defeated by the eventual champion, Lord Jorah Mormont.
A Game of Thrones
Lord Jason travels to King's Landing and the Hand's tourney, accompanied by his son Patrek and a small party of knights and squires. They travel from Seagard by the way of the kingsroad and pass Catelyn Stark and Rodrik Cassel near the inn at the crossroads, but do not recognize them. During the tourney, Jason defeats Ser Aron Santagar in a joust.
In the opening weeks of war after the death of King Robert I Baratheon, Ser Kevan Lannister identifies Lord Jason and House Mallister as one of the only standing threats to the Lannister campaign in the riverlands but Lord Tywin Lannister disregards his brother, believing Jason is not strong enough to fight alone. Grand Maester Pycelle sends ravens demanding that Jason and other riverlords swear allegiance to the new king, Joffrey I Baratheon.
Once Robb Stark marches past the Twins, Lord Mallister adds his strength to Robb's and takes part in the battle in the Whispering Wood, during which he captures Lord Gawen Westerling. The Mallister eagle is one of the banners spotted during the Battle of the Camps. After their victory, Jason sits at Robb's war council, where he suggests fortifying the riverlands and cutting off Tywin from supplies and fresh men. Robb is proclaimed King in the North at the council.
A Clash of Kings
When Robb announces his intention to send his friend, Theon Greyjoy, back to the Iron Islands as an envoy, Catelyn unsuccessfully suggests sending Jason instead. Jason returns to Seagard, accompanied by his son, Patrek Mallister, and Theon. When he thinks his son is growing too close to the young ironman, Jason reminds Patrek whom Seagard was built to protect against. As no ships from the Iron Islands await Theon on his arrival in Seagard, Jason believes the ravens Robb had sent from Riverrun to announce Theon's return had been lost and thus he sends his own birds.
At the Battle of the Fords, Jason commands the defense of four fords along the Red Fork, including the one closest to Riverrun. Catelyn watches Jason's men defeat Lannister riders, and Jason later sends a messenger to inform Riverrun of Lord Flement Brax's defeat.
A Storm of Swords
When Robb returns to Riverrun from the westerlands, Jason is cool but courteous toward Catelyn, who released Robb's captive, Ser Jaime Lannister, without the king's permission. toward is one of the seven nobles who are chosen to launch the funeral boat of Lord Hoster Tully at Riverrun.
A clean-shaven Jason meets Robb, King of the Trident, at Hag's Mire on his march north to the Twins, bringing with him the captain of the Myraham, who brings news of Balon Greyjoy's death. Jason is ordered by Robb to send two Mallister longships into the Neck, one carrying Galbart Glover and the other Maege Mormont, to find Greywater Watch and inform Lord Howland Reed of Robb's plan to retake Moat Cailin.
Robb intends for Catelyn to spend the rest of the war in safety with Lord Mallister at Seagard after Lord Edmure Tully weds Roslin Frey. However, Robb and Catelyn are betrayed by Houses Bolton and Frey and murdered during the Red Wedding.
A Feast for Crows
Lord Jason surrenders his castle at Seagard to Black Walder Frey after he threatens to hang Jason's son, Patrek, who had been taken captive at the Red Wedding. Black Walder keeps Jason as a prisoner inside his own castle, alongside his son.
A Dance with Dragons
Jason and Patrek remain imprisoned at Seagard.
- Jason and Catelyn Stark
- George R. R. Martin's A World of Ice and Fire, Jason Mallister.
- A Storm of Swords, Chapter 45, Catelyn V.
- A Game of Thrones, Chapter 28, Catelyn V.
- A Storm of Swords, Chapter 14, Catelyn II.
- A Storm of Swords, Chapter 53, Tyrion VI.
- A Game of Thrones, Chapter 29, Sansa II.
- A Storm of Swords, Chapter 67, Jaime VIII.
- A Storm of Swords, Chapter 42, Daenerys IV.
- A Song of Ice and Fire Roleplaying.
- A Clash of Kings, Chapter 11, Theon I.
- A Clash of Kings, Chapter 12, Daenerys I.
- A Game of Thrones, Chapter 56, Tyrion VII.
- A Game of Thrones, Chapter 57, Sansa V.
- A Game of Thrones, Chapter 63, Catelyn X.
- A Game of Thrones, Chapter 69, Tyrion IX.
- A Game of Thrones, Chapter 71, Catelyn XI.
- A Clash of Kings, Chapter 7, Catelyn I.
- A Clash of Kings, Chapter 45, Catelyn VI.
- A Storm of Swords, Chapter 35, Catelyn IV.
- A Storm of Swords, Chapter 51, Catelyn VII.
- A Feast for Crows, Chapter 38, Jaime VI.
- A Feast for Crows, Appendix.
- A Dance with Dragons, Appendix.