Ariarathes III of Cappadocia

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Ariarathes III (Ancient Greek: Ἀριαράθης, Ariaráthēs) ruled Cappadocia from about 262 or 255 BC to 220 BC. He was the son of Ariaramnes and grandson of Ariarathes II, and he married Stratonice, daughter of Antiochus II of the Seleucid Empire. He shared government with his father and, around 250 BC, became the first Cappadocian king (basileus). He is said to have sided with Antiochus Hierax in his war against Seleucus II Callinicus and to have expanded Cappadocia by adding Cataonia. He and Stratonice were the parents of Ariarathes IV.