Harsomtus [Greek] is the form of Horus in egyptian mythology which unites the northern and southern kingdoms of Egypt.
He is depicted as a child comparable to Harpokrates.
Therefore, at the Edfu Temple, he is identified as the offspring of Horus the elder and Hathor. He is also called Har-mau. A.G.H.
Jordan, Michael, Encyclopedia of Gods, New York, Facts On File, Inc. 1993, p. 95