The word may be first used in 13th Century in present Germany
Chronicles :
Charlemagne is crowned Emperor of the Romans by Pope Leo III- 25 December 800
Otto I is crowned Emperor of the Romans -2 February 962
Conrad II assumes crown of Burgundy- 2 February 1033
Peace of Augsburg -25 September 1555
Peace of Westphalia- 24 October 1648
Battle of Austerlitz- 2 December 1805
Francis II, Holy Roman Emperor forced abdication- 6 August 1806
