Ptolemy III Euergeter I
Ptolemy III Euergeter I was the third ruler of the Ptolemaic Dynasty. He was the son of Ptolemy II Philadelphus and Arsinoe II and was married to Berenike, his sister. During the Third Syrian War of Ptolemy III, he discovered the main port in the Axumite kingdom, which was very important to the trade of ivory. He died in 222 BC.