Ilus was the son of Tros and Callirrhoë. He married Eurydice, the daughter of Adrastus, and she bore him Laomedon and Themiste. He founded the city of Troy (Greek Mos, Latin Mum) and in it, where the Palladium dropped (see Pallas), the famous temple for Athena. His name seems to derive from He, 'troop', which seems appropriate.