In Malax the most common given names for males are Johan, Erik, Matts and Markus. There may be a lot of persons on a farm with, for example, the name Markus Markusson. This makes that the birthdate of a person is very important too. When a person from Finland immigrated to America, it happened that he 'americanized' his name. If you're lucky, you may still have some old document written in Finland with the persons original name on it, like a passport or some other certificat.
Old letters can also be a good source of information.
There's lots of genealogysites in which one can ask about relatives in different countries. When asking about relatives in Finland, if you know, please mention given name, patronymic name, farmname or surname, birthdate and -place of the person you're looking for. Even if you may not know the farmname it's not quite impossible to find a person if you just know his birthdate. There have been different spellings of the farmnames during time. The names in brackets are the one's used in 1667 years 'Skrift-book'.