Complex sentence: Although very little is written of Khurrazad we do however know that he was born to the powerful family from Armenia his father, Farrukh-Hormuzd, served the Sāsānian rulers in high office.
Split into simpler sentences: Although very little is written of Khurrazad, we do know that he was born to a powerful family from Armenia. His father, Farrukh-Hormuzd, served the Sassaanian rulers in high office.