Deaths on December 26

Valdemar, King of Sweden, 1250-1275 (b. c. 1238/1239)

Valdemar (English: Waldemar; Swedish: Valdemar Birgersson; 1239 – 26 December 1302) was King of Sweden from 1250 to 1275.

4 Oct

Byzantine-Venetian War (1296-1302)
A peace treaty between the Byzantine Empire and the Republic of Venice ends the Byzantine-Venetian War (1296-1302).
18 Nov

Unam sanctam
Pope Boniface VIII issues the Papal bull Unam sanctam, claiming spiritual supremacy for the papacy.