Classification of the demons

There were always attempts to classify demons in several categories. Christian demonology accepted that, providing several classifications of the demons. There could be classifications based on the nature of the demon, the sin with which they tempt humans, the month in which their power was stronger, the saints that were their adversaries, etc. Here follow some examples, listed in chronological order:

• Testament of Solomon provides a listing and description of many individual demons. (1st to 3rd century)\n*Psellus' classification of demons (11th century)\n*Spina's classification of demons (1467)\n*Classification of demons by month (16th century)\n*Binsfeld's classification of demons (1589)\n*Guazzo's classification of demons (1608)\n*Michaelis' classification of demons (1613)\n*Barrett's classification of demons (1801)

It can be noted that according to every author the domain of each demon is very different, with the exception of Francesco Maria Guazzo that seem to have copied Michael Psellus with a little difference. It can also be seen that each author chooses his demons in a random form. The classification of demons by month seems to have astrological implications more than religious ones. There were other classifications, by office, like those written in several grimoires; these are some examples:

• Le Dragon Rouge (1522)\n*Pseudomonarchia Daemonum (1583)\n*The Lesser Key of Solomon (17th century)

The author of The Lesser Key of Solomon copied Pseudomonarchia Daemonum almost literally, but added demons' descriptions, their seals and details. See also Hierarchy of the demons.