Mosskos was born among the common folk, with no house or name in the chronicles, and entered House Suirkrond by marrying Skolzel. He was ambitious, cautious and loyal, with a gift for dealing with people. In year 126 he was briefly at the head of Llaness. From year 126 he was ruler of the Methllerk until his death. He decided to raise houses (2 times). He lived under the rule of Londruin, Daunmend, Mondrais, Manra and Densond. He died of old age in the autumn of year 128, at the age of 65. With his death House Suirkrond went out. Tuindtuend succeeded him.