He was born in Egypt, son of one Valens; Horus was originally a student of rhetoric and an athlete and was a victor at the Ancient Olympic Games in Antioch in 364, probably as a boxer. Horus was also commended in that year, alongside his brother Phanes, to Maximus praefectus Aegypti, and Eutocius. He later turned to Cynic philosophy.
- Libanius, Epistulae 1278
- Macrobius, Saturnalia i. 7. 3
- Libanius, Epistulae 1278; 1279
- Macrobius, Saturnalia vii. 7. 8; 17. 14, etc.
- Symmachus, Epistulae ii. 39
- Arnold Hugh Martin Jones, John Robert Martindale, J. Morris, (1971), The Prosopography of the Later Roman Empire, page 445. Cambridge University Press
- R. Bracht Branham, Marie-Odile Goulet-Cazé, (2000), The Cynics: The Cynic Movement in Antiquity and its Legacy, page 396. University of California Press