the word “Thracian” just sounds cool
(It's only a movie...no Thracians were actually harmed.)
Miltiades, the Athenian hero of the battle of Marathon, married Hegesipyle, the daughter of a Thracian king named Olorus--she became the mother of Cimon, one of the most important Athenian generals of the period from 480 to 450 B.C.
The Athenian historian Thucydides was the son of a man named Olorus, but it is not known how or if his father was related to the other Olorus.