In Greek mythology, Demoleon (Ancient Greek: Δημολέων) was a Trojan warrior, son of Antenor and Theano. His father was a counselor to King Priam and his mother a priestess of Athena. Achilles killed him in the forefront of the fray in Iliad Book 20.
Adapted from Wikipedia, "Demoleon" · CC BY-SA 4.0
I.Son of Antenor
Demoleon belonged to the Antenorid house at Troy: son of Antenor the counselor and of Theano, priestess of Athena. Among his brothers Homer names Archelochus and Acamas among the Dardanian captains who fight for Priam's city.
When the chariots of the Achaeans tore Iphition asunder in the forefront, Achilles pierced Demoleon — a valiant warder of battle — in the temple through the helmet with cheek-pieces of bronze. The spear-point brake the bone and scattered the brain within; the bronze helm could not stay the blow.
II.Homonyms
This atlas entry (demoleon-antenorid) is Antenor's son slain by Achilles. Later Latin epic also knows a Demoleon among Turnus' victims or among other Trojan roll-calls; the Homeric Antenorid is the figure tracked here.