The name Horus is Greek. In Ancient Egypt he was known as "Heru" (sometimes Hor or Har), which is translated as "the distant one" or "the one on high"(from the preposition "hr" meaning "upon" or "above"). He was considered to be a celestial falcon, and so his name could be a specific reference to the flight of the falcon, but could also be seen as a more general solar reference. It is thought that the worship of Horus was brought into Egypt during the predynastic period.
He seems to have begun as a god of war and a sky god who was married to Hathor, but soon became considered as the opponent ofSet, the son of Ra, and later the son of Osiris. However, the situation is confused by the fact that there were many Hawk gods in ancient Egypt and a number of them shared the name Horus (or more specifically Har, Heru or Hor). Furthermore, the gods Ra,Montu and Sokar could all take the form of a falcon. Each "Horus" had his own cult center and mythology, but over time they merged and were absorbed by the most popular Horus, Horus Behedet (Horus of Edfu).