Tora Mosterstong (Þóra Morsturstöng) — also known as Thora Mostaff — was one of Harald Fairhair`s concubines and the mother of Håkon the Good; Harald Fairhair`s youngest son and the third king of Norway (c. 935 – 961). «When king Harald was nigh on 70 years old, he had a son with a woman named Tora and was called Mosterstang, her clan.....