Abramelin the Mage was a historical figure who lived in the 14th century and was the subject of a grimoire or magical text known as "The Book of Abramelin". The book was purportedly written by Abramelin himself and describes a system of magic that involves invoking angels and demons to achieve knowledge and power. The text gained popularity in the 19th century among members of various occult and magical orders, and it continues to be studied and practiced by some modern occultists today.