Where does “Agnius” come from?

Agnius (Lithuanian) comes from Latin agnus, from Proto-Italic agʷnos, from Proto-Indo-European h₂egʷnós, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

Ancestry of “Agnius”, step by step

StepLanguageWordMeaning
1Latinagnusa lamb, especially one used as a sacrifice
2Proto-Italicagʷnoslamb
3Proto-Indo-Europeanh₂egʷnóslamb
4Proto-Indo-European-nósCreates verbal adjectives from roots
Every word from Proto-Indo-European -nós →Every word from Proto-Indo-European h₂egʷnós →Every word from Proto-Italic agʷnos →