Granddaughter of Lord Walder Frey by his eighth son Merrett, called Fat Walda by her cousins at the Twins. When Lord Roose Bolton came north of the Trident in want of a wife and a dowry, her grandfather offered every unwed Frey granddaughter under his roof and promised the bride's weight in silver to settle the match. Walda was the heaviest by some margin, and Roose was a man who knew the price of a thing.
Took her seat at the Dreadfort in 299 AC with a pleasant disposition and a great many ribbons in her hair, and is, by the close of the year, with child.