Carloman II, King of West 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. Initially some Frankish nobles advocated electing Louis III as the sole king, but eventually both brothers were elected kings. Although some doubts were cast upon the legitimacy of their birth, the brothers obtained recognition and in March 880 divided their father's realm at Amiens, Carloman receiving southern Kingdom of Burgundy and Kingdom of Aquitaine.
After the accidental death of Louis III in August 882, Carloman II became the sole king of West Francia. The kingdom was in a deplorable condition partly owing to repeated incursions from the Viking raiders, and his power was very limited by rebellious nobles, especially in Burgundy.
Carloman II died while hunting on 12 December 884 and was succeeded in the throne by his cousin, the Emperor Charles the Fat.