Where does “Rusu de Jos” come from?

Rusu de Jos (Romanian) comes from Romanian rus, from Russian русь, from Old East Slavic Русь, from Finnish ruotsi, from Proto-Finnic *roocci, from Old Swedish roþs-, from Old Norse róðr, from Proto-Germanic rōþrą — to row; to separate; loose, sparse, rare.

Ancestry of “Rusu de Jos”, step by step

Rusu de Jos traces back through 3 separate lines of ancestry.

via Romanian rus

StepLanguageWordMeaning
1RomanianrusRussian
2RussianрусьRus
3Old East SlavicРусьRus; Ruthenia
4FinnishruotsiSwedish
5Proto-Finnic*roocciSwede originally anyone from Roslagen
6Old Swedishroþs-related to rowing
7Old Norseróðrrowing
8Proto-Germanicrōþrąoar; rudder
9Proto-Indo-Europeanh₁reh₁-to row; to separate; loose, sparse, rare

via Romanian de

StepLanguageWordMeaning
1Romaniandefrom; of; by
2Latinof; concerning; about
3Latinpostbehind; after, since, besides, except; behind,...
4Latinposteablative singular of postis
5Proto-Italicpostibehind, after
6Proto-Indo-Europeanpóstiafter
7Proto-Indo-Europeanpósafterwards, post; by, at

via Romanian jos

StepLanguageWordMeaning
1Romanianjosdown; low
2Latindiosum
Every word from Proto-Indo-European h₁reh₁-Every word from Old Swedish roþs-Every word from Proto-Finnic *roocci