Where does “Эстоний” come from?

Эстоний (Eastern Mari) comes from Russian Эсто́ния, from Medieval Latin Estonia.

Ancestry of “Эстоний”, step by step

StepLanguageWordMeaning
1RussianЭсто́нияEstonia
2Medieval LatinEstonia—
Every word from Medieval Latin Estonia →Every word from Russian Эсто́ния →
Эстоний — Etymology, Origin & Word History | Etymology Explorer