Adhemar (or Ademar) (Latin: Ademarius) was the son of Prince Peter of Salerno.
The counts of Capua whittled away at his princely authority and territory.
In 858, he had to call in the assistance of Guy I of Spoleto, who demanded the Liri Valley in return.
In 861, a popular revolt, led by Guaifer of the Dauferidi, overthrew him and imprisoned him.
This biography of an Italian noble is a stub.