Ozymandias is the ancient Greek name given to the Egyptian pharoah Ramses II.
Exact dates are uncertain, but the future "god-king", as he was considered by his subjects and court, was born approximately 1303 bce and died sometime after his 90th birthday, in 1213 bce.
During his lifetime, Ramses/Ozymandias solidified the power of the pharoah over a united Egypt during a time of unrest in much of the rest of the area. During his reign, massive monuments were built in honor of Egyptian gods and in honor of Pharoah Ramses II. It is possible that Ramses II was the Egyptian pharoah at the time of the events described in the book of Exodus in the Bible.