Impediments—Prohibited Degrees.
A man may not marry his:
1 Grandmother.
2 Grandfather’s Wife.
3 Wife’s Grandmother.
4-5 Father’s Sister, Mother’s Sister (i.e., aunt by blood).
6-7 Father’s Brother’s Wife, Mother’s Brother’s Wife (Uncle’s Wife, i.e., aunt by affinity).
8-9 Wife’s Father’s Sister, Wife’s Mother’s Sister (Wife’s Aunt).
10 Mother.
11 Stepmother.