Charles IV (1316-1378) was Holy Roman Emperor from 1355 to 1378.
He promulgated the Golden Bull of 1356 whereby the succession to the imperial title was laid down.
Holy Roman Emperor - a fascinating blend of past and present - YouTube (http://www.youtube.com/watch?v=IUSi_RoImPQ)
Charles IV promoted the Czech language to be the official language in Bohemia.
The coronation dinner of Charles IV
Coronation dinner of Charles IV, born Wenceslaus, 1316-1378, King of Stock Photo: 133555277 - Alamy (http://www.alamy.com/stock-photo-coronation-dinner-of-charles-iv-born-wenceslaus-1316-1378-king-of-133555277.html)
The Golden Bull of 1356 of Holy Roman Emperor Charles IV set out the conditions for succession to the imperial crown. The emperor would be elected by seven electors. Four were secular princes; three were ecclesiastical princes.