from Collin de Plancy's Dictionnaire Infernal
Purson seal
In demonology, Purson is a Great King of Jinnestan, being served and obeyed by twenty-two legions of demons. He knows of hidden things, can find treasures, and tells past, present and future. Taking a human or aerial body he answers truly of all secret and divine things of Earth and the creation of the world. He also brings good familiars.
Purson is depicted as a man with the face of a lion, carrying a ferocious viper in his hand, and riding a bear. Before him there can be heard many trumpets sounding.
Some believe Purson to be the very same being as the ancient Egyptian god Horus. Horus is one of the most ancient and respected gods, often appearing as either a young boy or as a man with the head of a falcon. He was god of the sky and protector of the pharaohs. At one time or another Horus was the patron god of nearly every Egyptian city. Interestingly, Horus also commonly appeared in the form of a sphinx - a lion's body with the head of a man, while Purson is portrayed as having a man's body with the head of a lion. Similarly, as a sky god Horus was said to represent both the sun and the moon simultaneously. Purson is a daytime demon, but his signature planetary figure is the Moon.
Other spellings: Curson, Pursan.