Khosrow I (also known as Chosroes I and Kasra in classical sources; 501–579, most commonly known in Persian as Anushiruwān "the immortal soul"; Persian: انوشيروان). Also known as Anushiruwan the Just (انوشيروان دادگر, Anushiruwān-e-dādgar) was the King of Kings (Shahanshah) of the Sasanian Empire from 531 to 579. He was the successor of his father Kavadh I (488–531). Khosrow I was the twenty-second Sasanian Emperor of Persia, and one of its most celebrated emperors.