1231 (AD 1231) Historical Timeline & Archive | 2Day Chrono-Wiki

Discover historical figures and milestones in 1231 (AD 1231), including Guo Shoujing on 2Day Chrono-Wiki.

1231 (AD 1231) Historical Timeline & Archive

Explore biographies of historical figures born or commemorated in 1231 (AD 1231) from the 2Day Chrono-Wiki encyclopedia.

Notable Figures in 1231 (AD 1231) (1)

Guo Shoujing (Born: 1231) — Pioneering Chinese astronomer, mathematician, and hydraulic engineer of the Yuan Dynasty.