Also Estonian. Estonian language is almost the same as that of the Finnish.
I'm not sure this is true. I have a friend who is a linguist and also a Mari,and she has told me it is only the three languages that are related. She is a university professor who has written a textbook on the Mari language,taught it in Finland,and given lectures on it at endangered languages conferences in Hungary. I'm pretty sure I will spell this wrong, but the three are desiginated as "Finno-Ugiric".