During the Second Siege of Riverrun, Jaime Lannister makes a deal with Edmure Tully: if Edmure surrenders Riverrun, Jaime will allow Edmure to live a comfortable life with his son and wife. Edmure capitulates, and orders his men to stand down and open the gates to the Frey and Lannister troops.
After the siege is resolved, Walder Frey hosts a feast for both the Freys and the Lannisters at the Twins to celebrate, where he reveals that he has had Edmure re-imprisoned; the whereabouts and status of Edmure's son is left unsaid, although it is presumed that he is safe with his mother.
In the books Edit
In "A Song of Ice and Fire" novels, Roslin is pregnant, and has not yet given birth. According to Perwyn, Roslin has been praying that her child will be a girl, fearing (correctly) that if she gives birth to a boy - her father will have no more need of her husband.
Edmure knows about his wife's pregnancy, but is unaware that if the child turns out to be a boy, the Freys will dispose of him. Jaime promises Edmure, among his other terms of surrender, that he will send Roslin to join him in Casterly Rock; if her child is a boy, he will serve House Lannister as a page and a squire, and when he earns his knighthood they'll bestow some lands upon him; if Roslin gives birth to a daughter, Jaime will see her well dowered when she’s old enough to wed.
|Lord:||Edmure Tully||Heir:||Unidentified son|
|Title(s):||Lord Paramount of the Riverlands · Lord of Riverrun|
|Current members:||Roslin Tully|
|Deceased members:||Catelyn Stark · Hoster Tully · Minisa Tully · Lysa Arryn · Brynden Tully|