The demon Astaroth appears in the grimoires Munich Manual of Demonic Magic, The Cambridge Book of Magic, Hygromanteia, The Magus, The Discoverie of Witchcraft, The Book of the Office of Spirits, Three Books of Occult Philosophy, The Grimoire of Pope Honorius, Grimorium Verum, The Book of Abramelin, The Book of Oberon, Pseudomonarchia Daemonum, The Lesser Key of Solomon, and Dictionnaire Infernal
From The Lesser Key of Solomon, Crowley/Mathers edition:
The Twenty-ninth Spirit is Astaroth. He is a Mighty, Strong Duke, and appeareth in the form of an hurtful Angel riding on an Infernal Beast like a Dragon, and carrying in his right hand a Viper. Thou must in no wise let him approach too near unto thee, lest he do thee damage by his Noisome Breath. Wherefore the Magician must hold the Magical Ring near his face, and that will defend him. He giveth true answers of things Past, Present, and to Come, and can discover all Secrets. He will declare wittingly how the Spirits fell, if desired, and the reason of his own fall. He can make men wonderfully knowing in all Liberal Sciences. He ruleth 40 Legions of Spirits. His Seal is this, which wear thou as a Lamen before thee, or else he will not appear nor yet obey thee, etc.
This demon derived from the diety Ashtoreth
The spells The mystery of the black hen for making a demon obedient The Kabbalah of the Green Butterfly A method for knowing whom you will marry invokes this demon.
The angel Asteraoth may be related to this demon.
This demon named in the historical event Loudun possessions
Illustration of Astarothsource: archive.org
Timeline of related events
1531Publication of Agrippa's Three Books of Occult Philosophy (lists this demon)
1536Publication of De praestigiis daemonum (lists this demon)
1563First known appearance of The Book of the Office of Spirits (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)
1634Loudun possessions (this demon named in Loudun possessions)
1641Publication of the Lesser Key of Solomon (lists this demon)
1670Publication of the Grimoire of Pope Honorious (lists this demon)