Pentawer was an ancient Egypt

Ancient Egypt

Ancient Egypt was an ancient civilization of Northeastern Africa, concentrated along the lower reaches of the Nile River in what is now the modern country of Egypt. Egyptian civilization coalesced around 3150 BC with the political unification of Upper and Lower Egypt under the first pharaoh...

ian prince of the 20th dynasty

Twentieth dynasty of Egypt

The Eighteenth, Nineteenth, and Twentieth Dynasties of ancient Egypt are often combined under the group title, New Kingdom. This dynasty is considered to be the last one of the New Kingdom of Egypt, and was followed by the Third Intermediate Period....

, a son of Pharaoh Ramesses III

Ramesses III

Usimare Ramesses III was the second Pharaoh of the Twentieth Dynasty and is considered to be the last great New Kingdom king to wield any substantial authority over Egypt. He was the son of Setnakhte and Queen Tiy-Merenese. Ramesses III is believed to have reigned from March 1186 to April 1155 BCE...

 and a secondary wife, Tiye

Tiye (20th dynasty)

Tiye was an Ancient Egyptian queen of the twentieth dynasty; a secondary wife of Ramesses III, against whom she instigated a conspiracy.Tiye is known from the Judicial Papyrus of Turin, which recorded that there was a conspiracy against Ramesses, in which several people in high positions in the...

.

He was to be the beneficiary of the harem plot planned by his mother Tiye to assassinate the pharaoh. Tiye wanted her son to succeed the pharaoh, even though the rightful heir was not him but a son of the chief queen Iset Ta-Hemdjert

Iset Ta-Hemdjert

Iset Ta-Hemdjert or Isis Ta-Hemdjert, simply called Isis in her tomb, was an Ancient Egyptian queen of the twentieth dynasty; the Great Royal Wife of Ramesses III and the Royal Mother of Ramesses VI....

. According to the Judicial Papyrus of Turin

Judicial Papyrus of Turin

The Judicial Papyrus of Turin is an ancient Egyptian record of the trials held against conspirators plotting to assassinate Ramesses III in what is referred to as the "Harem Conspiracy"...

Pentawer was among those who were made to stand trial for their participation in the conspiracy. It is likely that he was forced to commit suicide.

Some suggest that he is "the Screaming Mummy" known as Unknown Man E.