If your birth certificate says you were born in Roseau, that would be correct information. Were you adopted as an infant? As for the letter from Rice County....were your adoptive parents living in Rice County when they adopted you? Typically an adoption is finalized in the Juvenile Court of the county where the adoptive parents lived at the time. Do you know what agency your adoption was handled through? If not, you can contact the Minnesota Dept. of Health. Ask them if you can have a copy of your original birth certificate (the one with your birth mother's name on it) and also what agency handled your adoption. You may not be able to get your original birth certificate, if your birth mother has not signed a release. But you don't know, if you don't ask.