Where does “Portugal” come from?

Portugal (Livonian) comes from Latvian Portugāle, from Latin Portus Cale, from Latin Portus, from Proto-Italic portus, from Proto-Indo-European pértus, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “Portugal”, step by step

StepLanguageWordMeaning
1LatvianPortugālePortugal
2LatinPortus CaleOporto
3LatinPortus” or, later, “Portus Rōmae”}} Portus large artificial harbour of Ancient Rome
4Proto-Italicportusharbour
5Proto-Indo-Europeanpértuscrossing
6Proto-Indo-Europeanper-before, in front; first; to go through
7Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European pértus