Khnum

Khnum was a ram-headed god in ancient Egypt, worshiped as the god of the evening sun. The Third Doctor showed a slide show at The Cloven Hoof that featured Khnum depicted with a solar disc above his horns. He suggested that the image of horned gods was influenced by the Dæmons. (TV: The Dæmons) Countess Scarlioni viewed a scroll depicting Khnum holding an ankh, standing between Anubis and Scaroth, her husband. (TV: City of Death)

Behind the scenes
If it is correct that the 740 Osirians who defeated Sutekh were those named in the tomb of Thutmose III (TV: Pyramids of Mars), Khnum would be an Osirian.