"Is this a rescue?"
―Willem Lannister to Rickard Karstark[src]

Willem Lannister, along with his brother Martyn, was a squire in the Lannister army. Both were younger sons of Ser Kevan Lannister, and younger brothers of Lancel Lannister.


Season 3

Willem, along with his brother Martyn, is captured by the forces of House Tully led by Edmure Tully following the Battle of Stone Mill. The two are kept as hostages at Riverrun, the seat of the Tullys.

After Robb Stark visits Riverrun to attend the funerals of Lord Hoster Tully, Willem and Martyn are visited in their cell by Queen Talisa Stark, who tends to Martyn's wounded hand. Willem looks in silence while Martyn asks if the tales told among the Lannisters about Robb turning into a wolf at night or devouring his enemies are true.[1]

Martyn and Willem are murdered inside their cells by Lord Rickard Karstark in retribution for his son being killed by Jaime Lannister, and in defiance of Robb Stark's orders. Rickard is consequently executed for treason by Robb, causing the Karstarks to desert Robb's cause.[2]

Family tree

Tytos tree
Tytos Lannister

Jeyne Lannister
née Marbrand
Tywin fam tree
Tywin Lannister
Joanna Lannister
Kevan fam tree
Kevan Lannister
Dorna Lannister
née Swyft
Robert tree
Robert Baratheon House-Baratheon-Main-Shield
Cersei family tree
Cersei Lannister
Jaime family tree
Jaime Lannister
Unknown tree
Tyrion family tree
Tyrion Lannister
100px-Sansa tree
Sansa Stark House-Stark-Main-Shield
Lancel tree
Lancel Lannister Faith-Militant-Main-Shield
Martyn Lannister tree
Martyn Lannister
Willem Lannister tree
Willem Lannister
Unnamed son
Died in infancy
Joffrey tree

Joffrey Baratheon House-Baratheon-of-King's Landing-Main-Shield

Margaery Tree
Margaery Tyrell House-Tyrell-Main-Shield
Mycella Season 5 family tree pic

Myrcella Baratheon House-Baratheon-of-King's Landing-Main-Shield

Trystane Martell family tree

Trystane Martell House-Martell-Main-Shield

Tommen Baratheon family tree
Tommen Baratheon House-Baratheon-of-King's Landing-Main-Shield
Margaery Tree
Margaery Tyrell House-Tyrell-Main-Shield


Season Three appearances
Valar Dohaeris Dark Wings, Dark Words Walk of Punishment And Now His Watch Is Ended Kissed by Fire
The Climb The Bear and the Maiden Fair Second Sons The Rains of Castamere Mhysa


Robb Stark: "Tywin Lannister has my sisters. Have I sued for peace?"
Edmure Tully: "No."
Robb Stark: "Do you think he'll sue for peace because we have his...father's brother's great-grandsons?"
Edmure Tully: "No."
Robb Stark dismisses Martyn and Willem's value as hostages.[src]
Robb Stark: "It took five of you to murder two unarmed squires."
Rickard Karstark: "Not murder, your grace. Vengeance."
Robb Stark: "Vengeance? They didn't kill your sons. I saw Harrion die on the battlefield and Torrhen..."
Rickard Karstark: "Was strangled by the Kingslayer. They were his kin."
Robb Stark: "They were BOYS!"
Rickard Karstark's unsuccessful justification for murdering Willem and Martyn Lannister[src]

In the books

In the A Song of Ice and Fire novels, Willem and Martyn are the twin sons of Ser Kevan Lannister, and younger brothers of Lancel Lannister. He and his cousin Tion Frey - son of Genna Lannister and Emmon Frey - are captured at the Battle of the Whispering Wood. Later, Willem and Tion are killed by Rickard Karstark.

See also


  1. "Walk of Punishment"
  2. "Kissed by Fire"
v  d  e
Lord: Cersei Lannister Heir:
Seat: Casterly Rock / Red Keep Lands: The Westerlands / The Crownlands
Title(s): Lord Paramount of the Westerlands · Lord of Casterly Rock · Warden of the West · King of the Rock (pre-War of Conquest)
Ancestors:Lann the Clever · Tommen II Lannister · Loren Lannister · Tyland Lannister · Damon Lannister
Current members:Tyrion Lannister · Jaime Lannister · Dorna Lannister · Cynda Lannister · Lyman Lannister
Deceased members:Tytos Lannister · Joanna Lannister · Stafford Lannister · Alton Lannister · Martyn Lannister · Willem Lannister · Orson Lannister · Tywin Lannister · Lancel Lannister · Kevan Lannister
Household:Bronn · Gregor Clegane · Qyburn · {Amory Lorch} · {Polliver} · {Rorge} · {Biter}