Pietro D'Abano was an italian philosopher, doctor, and astrologer who lived in Padua, Italy in the 13th and 14th centuries. He was accused twice by the Italian inquistion of practicing magic, and, although he died before the second trial was complete, was ultimately found guilty and burned in effigy.
He is often cited in grimoires as a source of magical knowledge, or attributed authorship of texts in order to bestow a sense of legitimacy.
The grimoire Heptameron attributed to this person.
The grimoire The Grimoire of Arthur Gauntlet mentions this person.