Year 1312 (MCCCXII) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar.
April – Pope Clement V forcibly disbands the Knights Templar. This is following years of persecution of the Knights Templar, initially started on Friday, October 13th, 1307 in collusion with King Philip "the fair" Le Bel of France.
June 15; The Battle of Rozgony is fought.
June 29 – Henry VII, Holy Roman Emperor is crowned in the Lateran Palace due to St Peter's Basilica being occupied by Romans hostile to him.
September 27 – the Charter of Kortenberg is signed, and is possibly the first constitution which allows democratic decisions in feudal mainland Europe.
October 31 – Henry VII, Holy Roman Emperor is forced to abandon his campaign against Florence.
The Knights Hospitaller, newly based on Rhodes, defeat a Turkish fleet at the Battle of Amorgos.
The Siege of Rostock begins.
The Canary Islands are "rediscovered" by Lancelotto Malocello, a Genoese navigator, who sails to Lanzarote and remains there for almost two decades.
Mansa Musa starts to rule the Mali Empire (approximate date).
November 13 – King Edward III of England (d. 1377)
date unknown
William Donn de Burgh, 3rd Earl of Ulster (d. 1333)
Agnes, Countess of Dunbar, defender of Dunbar (d. 1369)
William II, Duke of Athens (d. 1338)
May 13 – Theobald II, Duke of Lorraine (b. 1263)
June 19 – Piers Gaveston, favourite of Edward II of England
August 27 – Arthur II, Duke of Brittany (b. 1262)
September 7 – King Ferdinand IV of Castile (b. 1285)
October 27 – John II, Duke of Brabant (b. 1275)
date unknown
Eschiva of Ibelin, sovereign Lady of Beirut (b. 1253)
Tokhta, khan of the Blue Horde
Zayn al-Din al-Amidi, blind Arab scholar
1312 Wikipedia (Text) CC BY-SA