I didn't know Londres. I heard about Durres, Albania, for the first time today, too. I had wondered about a connection between door, Germanic \dorz, Latin for

I didn't know Londres. I heard about Durres, Albania, for the first time today, too. I had wondered about a connection between door, Germanic \dorz, Latin forum* and port, porta, portal before (Latin f frequently corresponds to English d, e.g. inferior, En under). Suppose -dres for Londres once meant port, which is always a good guess for any bigger city's name. I can't confirm it though. Durres derives from Dorian Greek Durrhakhion, but Greek has thura for "door"; so if I'm correct, they would have loaned the form with d. Ironically, Albanian dere "door" has a homophone "bitter; difficult, tiresome" (from a different root if akin to Greek due "misery") and one traditional explanation of Albanias means difficult coast (although there was a historical kingdom Albania far off from the coast). By the way: It's Londer in Albanian, too, and Londres in many Romance languages. tl;dr: nobody really knows, and the first address for French etymology doesn't explain Londres either