Where does “Dyneburg” come from?

Dyneburg (Polish) comes from German Dünaburg, from Latvian Daugavpils, from Latvian pils, from Proto-Balto-Slavic pilis, from Proto-Indo-European pl̥h₁-í-s, from Proto-Indo-European tpelH- — fortification, city.

Ancestry of “Dyneburg”, step by step

StepLanguageWordMeaning
1GermanDünaburg—
2LatvianDaugavpils—
3Latvianpilspalace; castle
4Proto-Balto-Slavicpilis—
5Proto-Indo-Europeanpl̥h₁-í-s—
6Proto-Indo-EuropeantpelH-fortification, city
Every word from Proto-Indo-European tpelH- →Every word from Proto-Indo-European pl̥h₁-í-s →Every word from Proto-Balto-Slavic pilis →