Complex sentence: Grandson of Thomas the 5th son of Sir Henry by Joan Moels, Thomas's son William died young and his son Edward inherited the barony after the death of Sir Thomas Pomeroy, son of Robert of Upottery & Bockerell, in 1426.
Split into simpler sentences: Grandson of Thomas the 5th son of Sir Henry by Joan Moels. His son William died young and his son Edward inherited the barony after the death of Sir Thomas Pomeroy, son of Robert of Upottery & Bockerell, in 1426.