Kingdom of Pontus
Laodice was of Persian and Greek Macedonian ancestry. She was the first born child of the monarchs of the Kingdom of Pontus, Laodice VI and Mithridates V Euergetes, who reigned 150-120 BC. One of the siblings was Mithridates, who became Mithridates VI Eupator Dionysius, and reigned 120–63 BC. She was born and raised in the Kingdom of Pontus.