Grimoald IV was the Lombard prince of Benevento from the death of his father, Grimoald III, in 806 to his own death in 817. His father and grandfather before him had each tried to rebel against the Frankish suzerainty they had at one time or another recognised. Grimoald was no different. In 814, he pledged tribute to the Emperor 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. The Lombards (Latin Langobardi, from which the alternative name Longobards found in older English texts), were a Germanic people originally from northern Europe that entered the late Roman Empire. ... This is as list of the Dukes and Princes of Benevento (see Duchy of Benevento), it is one of Wikipedias Lists of Incumbents. ... Grimoald III was the Lombard prince of Benevento from the death of his father, the first independent duke, Arechis II, in 788 to his own death in 806. ... Events April 12 - Nicephorus elected patriarch of Constantinople, succeeding Tarasius. ... Events Louis the Pious divides his empire among his sons. ... Events Louis the Pious succeeds Charlemagne as king of the Franks and Emperor. ... The Holy Roman Emperor was, with some variation, the ruler of the Holy Roman Empire, the predecessor of modern Germany, during its existence from the 10th century until its collapse in 1806. ... Louis the Pious doing penance at Attigny in 822. ... (8th century - 9th century - 10th century - other centuries) Events Beowulf might have been written down in this century, though it could also have been in the 8th century Viking attacks on Europe begin Oseberg ship burial The Magyars arrive in what is now Hungary, forcing the Serbs and Bulgars south...