‘Heptamon or Magical Elements was allegedly written by the Italian philosopher, astrologer and professor of medicine in Padua, Pietro d'Abano (c.1257– 1316). The book also called a grimoire, is a concise treaty on ritual magical rites, specifically the conjuring of angels one for each day of the week. Although this alleged work did not appear in print until 1496, his other works were cited for trial twice by the inquisition, on the first occasion he was acquitted, however he died in prison in 1315 or 1316