Original: Charles the Bald ( 13 June 823 â '' 6 October 877 ) , Holy Roman Emperor ( 875 â '' 877 , as Charles II ) and King of West Francia ( 840 â '' 877 , as Charles II , with the borders of his land defined by the Treaty of Verdun , 843 ) , was the youngest son of the Emperor Louis the Pious by his second wife Judith .
Simplified: Charles the Bald ( 13 June 823 - 6 October 877 ) was King Charles II of France ( 843-877 ) and also Charles II of the Holy Roman Empire ( 875-877 ) and King of West Francia ( 840-877 ) .