25th July » The city of Constantinople is recaptured by Empire of Nicaea e.g Nicaean forces under the command of Alexios Strategopoulos, re-establishing the Byzantine Empire.
15th August » Michael VIII Palaiologos is crowned List of Byzantine emperors e.g Byzantine emperor in Constantinople.
29th August » Pope Urban IV succeeds Pope Alexander IV as the 182nd pope.
25th December » John IV Laskaris of the restored Byzantine Empire or Eastern Roman Empire is deposed and blinded by orders of his co-ruler Michael VIII Palaiologos.
Famous Birthdays in 1261
1st February » Walter de Stapledon, English bishop (d. 1326)
28th February » Margaret of Scotland, Queen of Norway (d. 1283)