Where does “Рига” come from?

Рига (Eastern Mari) comes from Russian Ри́га, from Finnish riihi, from Proto-Finnic riihi, from Proto-Finnic riŋeše.

Ancestry of “Рига”, step by step

StepLanguageWordMeaning
1RussianРи́гаthreshing barn, rickyard
2FinnishriihiA traditional Scandinavian and Russian grain...
3Proto-Finnicriihicabin for drying and threshing grain
4Proto-Finnicriŋeše—
Every word from Proto-Finnic riŋeše →Every word from Proto-Finnic riihi →Every word from Finnish riihi →