Where does “Ilion” come from?

Ilion (Italian) comes from Ancient Greek Ἴ̄λιον, from Hittite ??? — Wilusa; {{w|Wilusa}}.

Ancestry of “Ilion”, step by step

StepLanguageWordMeaning
1Ancient GreekἼ̄λιονIlium, Troy
2Hittite???Wilusa; {{w|Wilusa}}
Every word from Hittite ??? →Every word from Ancient Greek Ἴ̄λιον →