Brethbruin was born among the common folk, with no house or name in the chronicles, and entered House Stabrueth by marrying Lletasruil. He was bold, fickle and rash, with a gift for dealing with people. He gave House Stabrueth its name, and its motto: “No one eats alone”. He lived under the rule of Tuelsue and Thegueth. He saw Llaness and Stianess founded. He died of old age in the autumn of year 35, at the age of 65. With his death House Stabrueth went out.