Where does “ersämordva” come from?

ersämordva (Finnish) comes from Finnish Mordva, from Russian Мордва́.

Ancestry of “ersämordva”, step by step

ersämordva traces back through two separate lines of ancestry.

via Finnish Mordva

StepLanguageWordMeaning
1FinnishMordvaMordovia
2RussianМордва́—

via Finnish ersä

StepLanguageWordMeaning
1FinnishersäErzya Finno-Ugric language spoken primarily in the Volga region of Russia
2ErzyaэрзяErzya (a member of the ethnic group Erzya-Mordvin, closely related to the Moksha or Moksha-Mordvin)
Every word from Russian Мордва́ →Every word from Finnish Mordva →