Gemmos (Demon)

The demon Gemmos appears in the grimoire The Book of Oberon

From The Book of Oberon, Dan Harms edition:

Gemmos

Gemmos, a stronge lord, appeareth like a knight, his horse is red, & he speaketh with a strong voice, & he teacheth howe all kind of mettals, maye be turned into, pure gold, & he knoweth the vertues of hearbes, & precious stones, & he teacheth phisick logicke, & giveth true aunswere of thinges stollen, & he was of the order of the Archangels, & therfore he is of the greater force, & hath under him 27 legions.

This demon was of the angelic order Archangel

Timeline of related events

1500

1577

Book of Oberon completed (lists this demon)