Dyas, also spelled Diyas, was an 11th-century Chudasama king of Saurashtra region of western India mentioned in bardic literature and folklore.
During his reign, the Raja (king) of Patan invaded his dominions and conquered the capital town of Vamanasthali (now Vanthali).
Different reasons are assigned for the war but the accounts are unanimous in representing Dyas to have insulted one of the ladies of the Raja's family while on a pilgrimage to Girnar near Junagadh.
[1] When Dyas died, his son Navagahana was a child and was secretly raised.
After few years of reign by governors appointed from Patan, Navaghana regained the throne when he became an adult.