According to some authors, he was born in the castle of his father, Landulf of Aquino.
Celotno besedilo v latinskem izvirniku je kritično objavila Sheila Low-Beer v svoji doktorski disertaciji "Herman of Carinthia: The Liber imbriam, The Fatidica and the De indagatione Cordis", Univerza mesta New York (The City University of New York).