Mithridates IV of Pontus

Mithridates IV of Pontus or known by his full name Mithridates Philopator Philadelphus (Greek: Mιθριδάτης ὁ Φιλoπάτωρ Φιλάδελφoς, which means "Mithridates the father-loving, brother-loving"; flourished 2nd century BC, died ca. 150 BC) was a prince and sixth King of the Kingdom of Pontus.

Mithridates IV was of Persian and Greek Macedonian ancestry. He was the son born to the Monarchs Laodice and Mithridates III of Pontus. Mithridates IV had two siblings: one brother called Pharnaces I of Pontus and a sister called Laodice. He was born and raised in the Kingdom of Pontus.

Mithridates IV is first mentioned in 179 BC, as he is associated with Pharnaces I in a treaty concluded by the latter King of Pergamon Eumenes II, in a manner that would lead one to suppose he was already admitted to some share in sovereign power. The date of Mithridates’ accession to the Pontian throne is utterly mysterious, since we first hear of him as ruler in 154 BC, when he is mentioned as sending an auxiliary force to the assistance of King of Pergamon, Attalus II Philadelphus, against the King of Bithynia, Prusias II. This moment was an important event, since it signalled the start of a policy of friendship of the Kingdom of Pontus with the Roman Republic and her allies which would continue till Mithridates VI Eupator.

At an unknown date, he married his sister Laodice as his Queen. They appeared to have no children. According to the surviving coinage, his royal title and full name was Mithridates Philopator Philadelphus. Coinage has survived issued by Mithridates IV alone and ones he issued with Laodice. The ones issued with his sister-wife display a fine double portrait and they adapted a Ptolemaic model for coinage. It is clear that the coinage draws attention to his Persian and Greek origins.

...
Wikipedia