From A Wiki of Ice and Fire
Daughter who died in infancy
A Clash of Kings (mentioned)|
A Storm of Swords (mentioned)
A Feast for Crows (appears)
Mariya is a handsome woman with grey streaks in her hair.
During her marriage to Merrett Frey, whom she found disappointing, Mariya had three girls, a stillbirth, a girl that died in infancy and then a son.
A Feast for Crows
|Raymun||Three older brothers||Merrett Frey||Mariya||Cleos Frey||Jeyne|
|Lyman||Pate of the Blue Fork||Amerei Frey||Lancel Lannister||"Fat" Walda Frey||Roose Bolton||Marissa Frey||"Little" Walder Frey||Tywin Frey||Willem Frey|