December 26, 1065: The first building of Westminster Abbey is dedicated, though legend holds that the abbey was founded as early as 616.
December 26, 1194: Holy Roman Emperor Frederick II is born today near the town of Jesi, in the Marche region of Italy. Frederick claimed to be a direct successor to the Roman Emperors of old and united the kingdoms of Italy, Germany, Sicily, and Jerusalem (by marriage and crusade). He was frequently at war with the popes of his era, mostly for geopolitical reasons, and was excommunicated four times during his reign.