farn-sasan went into the indo-parthian throne sometime in 210. they don't know what king was before him. they think it may have been pacores. farn-sasan is not mentioned in any books. he is only known because of his coins. these coins all say "farn-sasan, son of adur-sasan, grandson of tirdat, son of the grandson of sanabares, the king of kings." farn-sasan tried to make himself notable by his rule by showing that he was related to his great-grandfather, sanabares, a famous indo-parthian king. he calls the king of kings sanabares the king of kings. farn-sasan also called himself the king of kings. this happened a lot in achaemenid and parthian rulers.