Gauthsiath was born among the common folk and entered House Thaimark. She was easily content, forgiving and humble, with a gift for keeping the accounts. She gave House Thaimark its name, and its motto: “No one eats alone”. She lived under the rule of Tuindtuend, Sauchia, Salziark and Mendbrark. She knew hunger in Zailira. She died of hunger in the spring of year 185, at the age of 49. With her death House Thaimark went out.