When was Jin Dynasty established?

The Jin dynasty or the Jin Empire sometimes distinguished as the Sima Jin or Liang Jin ("Two Jins") was a Chinese dynasty traditionally dated from 266 to 420. It was founded by Sima Yan, son of Sima Zhao, who was made Prince of Jin and posthumously declared the founder of the dynasty. It followed the Three Kingdoms period (220-280 AD), which ended with the conquest of Eastern Wu by the Jin.