- Walder Frey: "My granddaughter...Wertha? Walra? Waldina?"
- Merry Frey: "I'm Merry."
- Walder Frey: "Fine."
- — Merry Frey being introduced to Robb Stark[src]
Along with several of Lord Frey's other daughters and granddaughters, Robb Stark had the option of marrying her. When he arrives at the Twins for his uncle Edmure's wedding, Robb apologizes for his slight against them. When introducing Merry, Lord Walder calls her Wertha, Walra, and Waldina before she meekly corrects him, though he quickly dismisses her. However, during the wedding feast she sits at the main table alongside Walder Frey's wife, Lord Walder himself, and the newlywed couple - the only one of Lord Walder's children (other than the bride Roslin) to sit as his table during the wedding.
|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|
In the books
In the A Song of Ice and Fire novels, there's a granddaughter of Lord Walder named Merianne Frey, who is also known as Merry, who is eleven years old. She's daughter of Ser Whalen Frey and Sylwa Paege. Whalen is the third child of Lord Walder's fourth wife, Alyssa Blackwood. Lame Lothar Frey is Walder's eldest child with Alyssa, making him Whalen's older brother and Merianne's uncle.
Merry was one of the Frey women presented to Robb Stark when he came to the Twins for Lord Edmure Tully's wedding. When she corrects her grandfather on her name, he refers to her as "Noisy", rather than dismissing her.
|Lord:||Lord Walder Frey||Heir:||Ser Stevron Frey|
|Seat:||The Twins · Riverrun||Lands:||Riverlands|
|Title(s):||Lord of the Crossing · Lord of Riverrun|
|Current members:||Arwaya Frey · Derwa Frey · Freya Frey · Janeya Frey · Lothar Frey · Marianne Frey · Merry Frey · Neyela Frey · Olyvar Frey · Roslin Frey · Sarra Frey · Serra Frey · Shirei Frey · Walda Frey · "Fat Walda" Frey · Waldra Frey · Waldron Frey · Ryger Rivers · Black Walder Rivers|
|Deceased members:||Joyeuse Erenford|
|Household:||Malcolm · Talbot|