Marbas (Demon)

The demon Marbas appears in the grimoires Book of Incantations, The Discoverie of Witchcraft, The Book of Spirits, The Book of the Office of Spirits, The Book of Oberon, The Grand Grimoire, Pseudomonarchia Daemonum, and The Lesser Key of Solomon

From The Lesser Key of Solomon, Crowley/Mathers edition:

Marbas

The Fifth Spirit is Marbas. He is a Great President, and appeareth at first in the form of a Great Lion, but afterwards, at the request of the Master, he putteth on Human Shape. He answereth truly of things Hidden or Secret. He causeth Diseases and cureth them. Again, he giveth great Wisdom and Knowledge in Mechanical Arts; and can change men into other shapes. He governeth 36 Legions of Spirits. And his Seal is this, which is to be worn as aforesaid.

The demon Varbas possibility the same as this demon.

Timeline of related events

1600

1700

1800

1810

In this decade: Book of Incantations written (lists this demon)

1821

Publication of the Grand Grimoire (lists this demon)