Where does “Londyn” come from?

Londyn (Polish) comes from Latin Londinium, from Proto-Celtic *Londinyom, from Proto-Indo-European lendʰ- — land, heath; loins.

Ancestry of “Londyn”, step by step

StepLanguageWordMeaning
1LatinLondiniumLondon
2Proto-Celtic*Londinyom—
3Proto-Indo-Europeanlendʰ-land, heath; loins

Words derived from “Londyn”

Every word from Proto-Indo-European lendʰ- →Every word from Proto-Celtic *Londinyom →Every word from Latin Londinium →