What is "kalfun"

Kalfün or Khalfun was the first Berber King of Bari during the Islamic control of that Apulian city.

Kalfun came from the Aghlabid emirate in North Africa, possibly from the Emirate of Sicily originally. He was a former leader.

In 847 he led Muslim forces that captured the formerly Byzantine city of Bari in south of Italy, and he set himself up as the lord in that city, founding the Emirate of Bari which would last until 871.