Complex sentence: Beder or Bederi is a Tjeker leader and ruler of Dor; while in other traditions, he also had a servant named Thorpayuran, mentioned in the Story of Wenamun.
Split into simpler sentences: Beder or Bederi was a Tjeker leader and ruler of Dor. By some accounts, he had a servant named Thorpayuran, mentioned in the Story of Wenamun.