By this stage Cappadocia was effectively a Roman protectorate and Ariobarzanes required regular intervention from Rome to protect him from the incursions of Tigranes the Great of Armenia (95–55 BC). However, siding with Rome in the Third Mithridatic War against Pontus he was able to enlarge his domains before abdicating in favour of his son, Ariobarzanes II (c.63–c.51 BC). Although Cappadocia continued as an independent state longer than its neighbours, it continued to require help from Rome to maintain its borders. Rome also controlled the succession. Ariobarzanes II married Athenais Philostorgos II, daughter of Mithridates VI and was succeeded by his son Ariobarzanes III (51–c.42 BC) who added Lesser Armenia to his territory but was executed by the Romans for opposing their control, being succeeded by his brother Ariarathes X (42–36 BC) who fared little better being executed by Mark Anthony and replaced with Archelaus (38 BC – 17 AD) a Cappadocian nobleman. Archelaus survived by switching allegiance from Mark Anthony to Octavian, later Emperor Augustus (27 BC – 14 AD), at the Battle of Actium (31 BC) gaining Cilicia. He also united Cappadocia with Pontus by marrying with Augustus' blessing, the client queen Pythodorida of Pontus (8 BC – 38 AD). In 17 BC he was summoned to Rome by the new Emperor, Tiberius (14–37 AD) whom he had angered by supporting a rival, and Tiberius declared Cappadocia a Roman Province ending the kingdom. Pythodorida returned to Pontus, Lesser Armenia was given to his step-son Artaxias III (18 – 35 AD), and the remaining territories to his son.