Within Buddhist mythology, Sadashkana according to the gold plate inscription of Senavarman, mentions Sadashkana as the Devaputra, son of maharaja rayatiraya Kujula Kataphsa : "Maharaja rayatiraya Kuyula Kataphsaputra Sadashkano devaputra" "The son of god Sadashkano, son of the Great king and king of kings, Kujula Kaphises"He was the son of the founder of Kushan empire and his brother was Sadaṣkaṇa, their next generation was Kanishka. Wikipedia