Pylus (mythology)
In Greek mythology, Pylus (Ancient Greek: Πύλος means "in the gateway") was a member of the Aetolian royal family. Pylus was a son of Ares and princess Demonice, daughter of King Agenor of Pleuron. He was the brother of Evenus, Molus and Thestius. Pylus was said to give his name to the Aetolian city of Pylene located  between the rivers Achelous and Evenos. Notes

References 
 Apollodorus, The Library with an English Translation by Sir James George Frazer, F.B.A., F.R.S. in 2 Volumes, Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921. ISBN 0-674-99135-4. Online version at the Perseus Digital Library. Greek text available from the same website. Princes in Greek mythology
Children of Ares
Mortal parents of demigods in classical mythology
Aetolian characters in Greek mythology