Radelchis II was the prince of Benevento from 881 to 900 with a long interruption during which the Byzantines

Byzantine Empire

The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

 and Spoletans

Duchy of Spoleto

The independent Duchy of Spoleto was a Lombard territory founded about 570 in central Italy by the Lombard dux Faroald.- Lombards :The Lombards, a Germanic people, had invaded Italy in 568 and conquered much of it, establishing a Kingdom divided between several dukes dependent on the King, who had...

 vied for the principality. In 884 (or 885), he was deposed and exiled by his brother Aiulf

Aiulf II of Benevento

Aiulf II reigned as Prince of Benevento during a particularly stormy period for the independent principality....

. In 897 (or 898), he was restored only to be conquered by his cousin Atenulf I of Capua

Atenulf I of Capua

Atenulf I , called the Great , was the prince of Capua from 7 January 887 and of Benevento from 899, when he conquered that principality...

 in January 900. He never ruled again.

His father was Adelchis of Benevento

Adelchis of Benevento

Adelchis was the son of Radelchis I, Prince of Benevento, and successor of his brother Radelgar in 854.It was given to Adelchis to preserve the ancient principality and its independence in the face of repeated assaults by the Saracens from the south, the Emperor Louis II from the north, and...

.