Complex sentence: The two sarcophagi are of a later, Twentieth dynasty date and belong to Ramesses Mentuherkhepshef, a son of Ramesses IX, and Amenherkhepshef, probably a son of Ramesses III. The sarcophagus of the latter was usurped from its original owner Twosret.
Split into simpler sentences: The two sarcophagi are of a later, Twentieth dynasty date. The tombs belong to Ramesses Mentuherkhepshef, a son of Ramesses IX, and Amenherkhepshef, probably a son of Ramesses III. The sarcophagus of the latter was usurped from its original owner Twosret.