Where does “Mesolongi” come from?

Mesolongi (English) comes from Greek Μεσολόγγι, from Italian Messolaghi, from Italian messo, from Latin missus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “Mesolongi”, step by step

StepLanguageWordMeaning
1GreekΜεσολόγγιMissolonghi large town in Aetolia-Acarnania in Greece
2ItalianMessolaghi
3Italianmessomessenger; usher; past participle of mettere
4Latinmissussent, having been sent, caused to go, having been...
5Latin-tusForms the past participle of verbs; Forms...
6Proto-Italic-tus
7Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tusEvery word from Latin -tusEvery word from Latin missus