From A Wiki of Ice and Fire
Janyce Hunter is a noblewoman of House Hunter and the wife of Edwyn Frey. They have one daughter, Walda.
A Storm of Swords
According to Merrett Frey, Janyce had an affair with her husband's brother Black Walder, which is common knowledge at the Twins.
Janyce Hunter is wed to Edwyn Frey, the oldest son of Ser Ryman Frey. They had one child, Walda Frey. It is unclear how she is related to the other members of House Hunter.