Mithridatic dynasty in the context of "Mithridates II of Cius"

Pontus (Ancient Greek: Πόντος Pontos) was a Hellenistic kingdom centered in the historical region of Pontus in modern-day Turkey, and ruled by the Mithridatic dynasty of Persian origin, which may have been directly related to Darius the Great of the Achaemenid dynasty. The kingdom was proclaimed by Mithridates I in 281 BC and lasted until its conquest by the Roman Republic in 63 BC. The Kingdom of Pontus reached its greatest extent under Mithridates VI the Great, who conquered Colchis, Cappadocia, Bithynia, the Greek colonies of the Tauric Chersonesos, and for a brief time the Roman province of Asia. After a long struggle with Rome in the Mithridatic Wars, Pontus was defeated.

The kingdom had three cultural strands, which often fused together: Greek (mostly on the coast), Persian, and Anatolian, with Greek becoming the official language in the 3rd century BC.

The Spartocids (Greek: Σπαρτοκίδαι) or Spartocidae was the name of a Hellenized Thracian dynasty that ruled the Hellenistic Kingdom of Bosporus between the years 438–108 BC. They had usurped the former dynasty, the Archaeanactids, who were tyrants of Panticapaeum from 480 to 438 BC. The throne of the Bosporan Kingdom was usurped by Spartokos I in 438 BC, after whom the dynasty is named.

Spartokos's descendants would continue to rule the Bosporus until 108 BC, in which it was briefly conquered by the invading Scythians led by Saumacus and subsequently ruled by the Mithridatic and Tiberian-Julian dynasties. The dynasty continued to repeat the names of succeeding princes, with the final Spartokos being named Spartokos V. The dynasty also had intermarriages, notably the marriage of Komosarye and Paerisades I. The most famous known ruler is Leukon I, who expanded the kingdom beyond its boundaries, resisted the Scythians, and ruled for 40 years.