Grimoald IV (assassinated 817), son of Ermenrih, called Falco, was the Lombard Prince of Benevento from 806 until his death. He was a thesaurarius or stolesayz/stoleseyzsee German stuhlsasse ("chair seat"). before becoming prince on the death of Grimoald III, over Grimoald's own son, Ilderic, another stoleseyz.Chris Wickham, Early Medieval Italy: Central Power and Local Society 400-1000 (MacMillan Press: 1981), 160.
In 812, he was forced to pay 25,000 solidi in tribute to Charlemagne. In 814, he pledged an annual tribute of 7,000 solidi to Louis the Pious. These promises, however, were never kept and his successor, Sico, made the same empty guarantees. The Beneventans were independent in practice and by the end of the ninth century would not even recognise Frankish overlordship. Grimoald was assassinated in 817 by nobles vying for his throne.Wickham, 154. In 818 according to the Annales Beneventani.
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