Original: Carloman II ( c. 866 & ndash ; 12 December 884 ) , King of Western Francia , was the youngest son of King Louis the Stammerer and Ansgarde of Burgundy , and became king , jointly with his brother Louis III of France , on his father 's death in 879 .
Simplified: Carloman II of France ( c. 866 -- 12 December 884 ) , king of Western Francia , was the youngest son of King Louis the Stammerer and Ansgarde .