Found out this handy bit of info today.....
First Cousins Applying for a Marriage License
First cousins may marry if they are 65 years of age or older. If they are between 55 and 64 years of age, the district court in the county where they reside must find that either person is incapable of reproduction in order for them to be married.
Qualifications: Any persons related to each other within and not including the fifth degree of consanguinity, except for cousins as stated above, may not be married.
Soooo....there is that.