(Ὡραπόλλων) was, according to Suidas (s. v.), a very distinguished Greek grammarian of Phaenebythis in Egypt, who first taught at Alexandria, and afterwards at Constantinople, in the reign of the emperor Theodosius.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890