Tostas was born among the common folk, with no house or name in the chronicles, and entered House Teththia by marrying Gesruiraus. She was ambitious, forgiving and loyal, with a gift for dealing with people. In the summer of year 73 she married Luirkllork, and was widowed in the winter of year 74. She had a son: Tairkgais, who died a child. From year 72 she was at the head of Mueness until her death. She decided to ration the grain (2 times) and to lift the rationing. She lived under the rule of Tuelsue, Thegueth, Lainchon, Garkthial, Brosdau, Tiandskath, Chosuizan, Skairkta, Londruin, Daunmend and Mondrais. She saw Stianess and Zailira founded. She knew hunger in Mueness. She died of hunger in the winter of year 75, at the age of 63. With her death House Teththia went out.