Parents
Spouse
Children
1246
| 1246 • Güyük Khan is enthroned as the 3rd Great Khan of the Mongol Empire (an event also witnessed by a papal mission under Giovanni da Pian del Carpine) at Karakorum. |
about
Age: 21y
1267
Age: 21y
birth of childJean De Franchimont 2 Sources ⇓ |
| 1267 • Roger Bacon completes his work Opus Majus and sends it to Pope Clement IV, who had requested it be written; the work contains wide-ranging discussion of mathematics, optics, alchemy, astronomy, astrology, and other topics, and includes what some believe to be the first description of a magnifying glass. Bacon also completes Opus Minus, a summary of Opus Majus, later in the same year. The only source for his date of birth is his statement in the Opus Tertium, written in 1267, that "forty years have passed since I first learned the alphabet". The 1214 birth date assumes he was not being literal, and meant 40 years had passed since he matriculated at Oxford at the age of 13. If he had been literal, his birth date was more likely to have been around 1220. |
1275
Age: 29y
| 1275 • Eleanor de Montfort is captured by pirates in the employ of Edward I of England to prevent her marriage to Llywelyn ap Gruffudd, prince of Wales; she is used as a bargaining chip over the coming years in Edward's attempts to subjugate Llywelyn and Wales. |