Chastuil was born among the common folk, with no house or name in the chronicles, and entered House Zuendbrian by marrying Tandllond. He was bold, generous and vengeful, with a gift for dealing with people. From year 201 he was at the head of Zailira until his death. He gave House Zuendbrian its name, and its motto: “What is one's is all's”. He decided to ration the grain (2 times) and to lift the rationing (2 times). He lived under the rule of Mendbrark. He knew hunger in Zailira. He died of hunger in the winter of year 204, at the age of 10. With his death House Zuendbrian went out.