Carloman of Bavaria was the eldest grandson of what descendant of Charlemagne?
Carloman of Bavaria Carloman (German: "Karlmann" , Latin: "Karlomannus" ; c. 830 – 22 March 880), was a Frankish king of the Carolingian dynasty. He was the eldest son of Louis the German, king of East Francia, and Hemma, daughter of a Bavarian count. His father appointed him margrave of Pannonia in 856, and upon his father's death in 876 he became King of Bavaria. He was appointed by King Louis II of Italy as his successor, but the Kingdom of Italy was taken by his uncle Charles the Bald in 875. Carloman only conquered it in 877. In 879 he was incapacitated, perhaps by a stroke, and abdicated Bavaria to Louis the Younger and Italy to Charles the Fat.
Wilhelminers The Wilhelminers were a noble Bavarian family of the 9th century. They rose to prominence mid-century under the brothers William and Engelschalk I, sons of William I, the founder of the family. The family held the March of Pannonia until 871, but their possession of it was the cause of a dispute, the Wilhelminer War, with the Aribonids. In the dispute the Wilhelminers had the support of Arnulf of Carinthia and Svatopluk of Moravia.