by Unknown, The Laxdaela Saga — Chapter XXXI: Thurid's Second Marriage… (1906)
“ Thorbjorg, Olaf's daughter, was of women the most beautiful and stout of build. She was called Thorbjorg the Stout, and was married west in Waterfirth to Asgeir, the son of Knott. He was a noble man. Their son was Kjartan, father of Thorvald, the father of Thord, the father of Snorri, the father of Thorvald, from whom is sprung the Waterfirth race. Afterwards, Vermund, the son of Thorgrim, had Thorbjorg for wife. Their daughter was Thorfinna, whom Thorstein Kuggason had for wife. Bergthora, Olaf's daughter, was married west in Deepfirth to Thorhall the Priest. ”
