Lord of Fire?

Hi friends, Does Naur + -gon = Naurgon for the lord of fire in Sindarin?

Normally [au] would become [o] in a compound, but that is blocked by the next vowel being [o]; that however has the problem of being having a superheavy syllable, which is not ideal.

I'd recommed going for an older compound here, resulting in Nargon.

Thank you Ellanto. <3