On This Day In History On This Day In History: Powerful And Controversial Roman Emperor Frederick II Excommunicated – On Sep 29, 1227 MessageToEagle.com | September 29, 2016 MessageToEagle.com – On September 29, 1227, Frederick II (1194 –1250), one of the most powerful Holy Roman Emperors of the Middle Ages was excommunicated by Pope Gregory IX Read More