Radelchis I (also Radalgis) (died 851) was the treasurer, then prince of Benevento from 839, when he assumed the throne upon the assassination (possibly his instigation) of Sicard and imprisonment of Sicard's brother, Siconulf, to his death, though in his time the principality was divided.
According to the Chronica S. Benedicti Casinensis, the gastald of Capua, Landulf the Old, who had been an ally of Sicard, freed the imprisoned Siconulf and, with the support of Guaifer, chief of the Dauferidi family of Salerno, brought him to that city to be proclaimed prince in opposition to Radelchis. This was the beginning of a civil war which was to last more than a decade.
In 841, Radelchis brought in the aid of Saracen mercenaries, as Andrew II of Naples had four years prior. The mercenaries sacked the city of Capua, forcing Landulf to found a new capital nearby on the hill of Triflisco. Siconulf responded by leasing his own band of Saracens. The depredations of the two Christian rulers and their Saracen helpers so disturbed the king of Italy, Louis II, that when he was crowned co-emperor in 850, he immediately set out to pacify the Mezzogiorno. In 851, he forced a peace on Radelchis and Siconulf and expelled the Saracens from Benevento (warriors from the Emirate of Bari, whom Radelchis happily betrayed). He divided the principality permanently. Radelchis did not live long thereafter and was succeeded by his son Radelgar.
Il est marié à Caretrude.
Ils se sont mariésSource 2
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