Guidau was born among the common folk, with no house or name in the chronicles, and entered House Dellias by marrying Gainzaun. He was ambitious, greedy and vengeful, with a gift for dealing with people. He gave House Dellias its name, and its motto: “What endures, remains”. He lived under the rule of Daunmend, Mondrais and Manra. He knew hunger in Mueness. He died of hunger in the autumn of year 89, at the age of 18. With his death House Dellias went out.