Sept 6, 394 Battle of the Frigidus: The Christian Roman Emperor Theodosius I defeated and killed the pagan usurper Eugenius and his Frankish magister militum Arbogast. 973 Pope John XIII died. John maintained a peaceful pontificate, and stayed closely allied with the Holy Roman Empire. 1525 Peace was declared between England and France. 1651 Charles II spent the day hiding in an oak tree following defeat by Oliver Cromwell at Worcester.