Amaymon is one of the four demon kings associated with the cardinal directions, along with Egyn (north), Oriens (east), and Paimon (west). Amaymon is generally associated with the direction south, although in Pseudomonarchia Daemonum he is listed as the king of the east.
From The Book of Oberon, Dan Harms edition:
Amaymon raigneth in the south, & all sprites in the south part of the world to him are obedient, his power is to give true answer of all things, & he giveth familiarity, dignity, & riches, & by Gods permission he hath power to consecrate books etc, he appeareth in favor of an old man having a long beard, & long hair hanging over his eyes, crowned with a bright crown, & rideth upon a rampaging lyon, & in his right hand he beareth a dart, before him commeth dancers & all manner of minstrels, he bringeth with him spirits innumerable of whom 12 of the most noblest are these that followeth but of all spirits in the world beware of him for he is very perilous.
The grouping Cardinal Demon Kings includes this demon.
The spell Goetia summoning ritual invokes this demon.
This demon is associated with the direction South
The grimoire The Lesser Key of Solomon mentions this demon.
This demon requires the magic object Seal of Solomon
This demon rides the creature Lion
Amaymon and Egynsource: wellcomeimages.org
Timeline of related events
1536Publication of De praestigiis daemonum (lists this demon)
1563First known appearance of The Book of the Office of Spirits (lists this demon)
1572Publication of the Key of Solomon (lists this demon)
1577Book of Oberon completed (lists this demon)
1584Publication of The Discoverie of Witchcraft (lists this demon)
1608Publication of the Book of Abramelin (lists this demon)
1620Publication of The Magical Calendar (lists this demon)
1641Publication of the Lesser Key of Solomon (mentions this demon)
1670Publication of the Grimoire of Pope Honorious (lists this demon)