From A Wiki of Ice and Fire
|Spouse||Ser Benfrey Frey|
Jyanna Frey is the wife and cousin of Ser Benfrey Frey. They have two children; Della and Osmund Frey.
A Feast for Crows
Jyanna is widowed as her husband, Ser Benfrey Frey, died of the wounds he received at the Red Wedding.