Adelfer or Adelferio was briefly the usurper

duke of Amalfi Medieval Amalfi was ruled, in the tenth and eleventh centuries, by a series of dukes ( la, duces), sometimes called ''dogi'' (singular: ''doge''), corresponding with the republic of Venice, a maritime rival throughout the Middle Ages. Before the t ...

from 984 to 986, while his brother, Manso I, was reigning in

Salerno Salerno (, , ; nap, label= Salernitano, Saliernë, ) is an ancient city and ''comune'' in Campania (southwestern Italy) and is the capital of the namesake province, being the second largest city in the region by number of inhabitants, after ...

. Manso returned to Amalfi in 986 and forced Adelfer to flee with his wife Drosa to

Naples Naples (; it, Napoli ; nap, Napule ), from grc, Νεάπολις, Neápolis, lit=new city. is the regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 909,048 within the city's adminis ...

Sources

*Ferrabino, Aldo (ed). ''Dizionario Biografico degli Italiani: I Aaron – Albertucci''.

Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus ( legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...

, 1960. Adelfer 10th-century Italian nobility {{duke-stub