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1245
| 1245 • First Council of Lyon: Holy Roman Emperor Frederick II is excommunicated and deposed, and the Seventh Crusade is proclaimed. |
about
Age: 30y
1275
Age: 30y
birth of childLlewelyn ap Owen 1 Source ⇓ |
| 1275 • The first main survey of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is finished; it began in 1274. |
1275
Aug 15
Age: 30y
| 1275 • The verge escapement, a simple type of escapement used in clocks, is invented (exact year unknown). |