Jason Lannister

Not to be confused with Jason Mallister.

Jason Lannister
Political information
House(s)	Lannister
Affiliation(s)	House Targaryen Greens
Title(s)	Lord Paramount of the West Master of Casterly Rock
Personal information
Culture	Westermen
Mother	Ceira Lannister
Spouse(s)	Johanna Westerling
Sibling(s)	Tyland Lannister (twin)
World of Westeros
Series	House of the Dragon
Season(s)	1 · 2
Appeared in	4 episodes (see below)
First seen in	"Second of His Name"
Portrayed by	Jefferson Hall

"That man's pride has pride."

―King Viserys I Targaryen on Jason Lannister

Lord Jason Lannister is the head of House Lannister, Lord of Casterly Rock, and Warden of the West during the reigns of Viserys I and Aegon II.

Biography

Background

Jason is the son of Lady Ceira Lannister and identical twin of Ser Tyland Lannister. He is the head of House Lannister during the reign of King Viserys I Targaryen. Although he is entitled the titles "Lord of Casterly Rock and Warden of the West," he instead is styled as Lord Paramount of the West and Master of Casterly Rock.

House of the Dragon: Season 1

Jason is part of the royal hunt in the Kingswood for Prince Aegon Targaryen's second nameday. He vies for Rhaenyra's hand, which Viserys hopes she will accept to arrange a marriage pact, but Rhaenyra rejects him. Jason later presents Viserys with the spear he uses to kill the hart. When Jason questions the succession, Viserys reminds him that it is his duty to inform him of any "rebellion" against him. Jason and his brother later sit alongside Lord Hobert Hightower when they witness the bloody Rhaenyra return to camp.

Jason later attends the wedding of Rhaenyra and Ser Laenor Velaryon with his brother. He congratulates Viserys on the marriage, and asks where Queen Alicent Hightower is. When Viserys informs him she is still getting prepared, he jests that men wage war because women would not make it in time for battle. Rhaenyra slyly tells Jason that his presence is always appreciated.

When the Dance of the Dragons starts, Prince Daemon says that the Blacks cannot count on the support of the Lannisters due to Tyland sitting on the Green Council.

House of the Dragon: Season 2

Following the outbreak of the Dance of the Dragons, Lord Jason calls his banners and begins amassing the armies of the Westerlands at the Golden Tooth. His twin, Ser Tyland, relays this news to the Green Council.

Lord Jason and his army meet with Lord Humfrey Lefford at the Golden Tooth following a long march from Casterly Rock. Jason brings with him a thousand knights, seven thousand archers and men-at-arms, as well as two caged male lions. Jason intends to stay at the Golden Tooth after commanding Humfrey to send a raven to inform Ser Tyland that they will be ready to march to Harrenhal as soon as Prince Aemond Targaryen joins them with Vhagar.

Lord Jason, Lord Humfrey, and their army march across the Riverlands as they prepare to face Daemon's army at Harrenhal.

Personality

Jason is a hunter and a warrior. He is arrogant and proud.

Quotes

Spoken by Jason

"This is why men wage war... because women would never be ready for the battle in time."

―Jason Lannister

Spoken about Jason

Viserys: "Jason Lannister is a fine match."

Rhaenyra: "He's arrogant and self-serious!"

Viserys: "Well I thought you might have that in common!"

— Viserys and Rhaenyra argue over Jason being a suitor for her hand in marriage

"That man's pride has pride."

―Viserys complains about Jason

Family

Lord Lannister Deceased

Ceira Lannister

Jason Lannister

Johanna Lannister née Westerling

Tyland Lannister

Behind the scenes

On September 24, 2021, HBO announced that Jefferson Hall had been cast in the dual role of twins Tyland and Jason Lannister for House of the Dragon. Jason's character description for Season 1 reads as follows:

"The Lord of Casterly Rock and twin to Ser Tyland Lannister."

His character description for Season 2 reads as follows:

"The haughty Lord of Casterly Rock and twin to Ser Tyland Lannister."

In the books

According to Fire & Blood and The World of Ice & Fire, Lord Jason Lannister was the twin brother of Ser Tyland Lannister, and both vied for the hand of Rhaenyra Targaryen in their youth in 112 AC without success.

In the books, Jason (or any member of House Lannister, for that matter) never uses the titles "Lord Paramount of the West" or "Master of Casterly Rock". When House Lannister bent the knee to Aegon the Conqueror, he named them Wardens of the West. The title of Lord Paramount is given to the Great Houses who rule over their constituent regions (for example, House Tully are Lords Paramount of the Trident and House Baratheon are Lords Paramount of the Stormlands), to signify that they stand paramount over the other vassal houses beneath them. The Lannisters, like the Starks and Arryns, do not typically use the title Lord Paramount, since it is more or less synonymous with Warden. It is possible that, in the show, Jason prefers to use a different style of address, although it would be unconventional. It is equally possible that the titles are an unintentional mistake, conflating "Warden of the West" and "Lord Paramount" into a singular title.

Similarly, "Master of Casterly Rock" is an invention of the TV series. "Masterly" houses, such as House Glover, House Tallhart, and House Harlaw, do exist. They are of unclear hierarchy in Westerosi nobility, although they appear to stand above landed knights but below full lords. It would be unlikely for the head of House Lannister, the ruling Great House of the Westerlands, to use a masterly title.

Appearances

• – "The Old Way" (mentioned)
• – "Second of His Name"
• – "We Light the Way"
• – "A Son for a Son" (mentioned)
• – "The Burning Mill" (mentioned)
• – "Regent" (mentioned)
• – "Smallfolk"
• – "The Queen Who Ever Was"

External links

• Jason Lannister on A Wiki of Ice and Fire (potential spoilers for House of the Dragon)
• Jason Lannister on The Official Guide