Maryland Family Law Section 2-202

      (a)      Any marriage performed in this State that is prohibited by this section is void.

      (b)      (1)      A man may not marry his:

                  (i)      grandmother;

                  (ii)      mother;

                  (iii)      daughter;

                  (iv)      sister; or

                  (v)      granddaughter.

            (2)      A woman may not marry her:

                  (i)      grandfather;

                  (ii)      father;

                  (iii)      son;

                  (iv)      brother; or

                  (v)      grandson.

            (3)      An individual who violates any provision of this subsection is guilty of a misdemeanor and on conviction is subject to a fine of $1,500.

      (c)      (1)      A man may not marry his:

                  (i)      grandfather's wife;

                  (ii)      wife's grandmother;

                  (iii)      father's sister;

                  (iv)      mother's sister;

                  (v)      stepmother;

                  (vi)      wife's mother;

                  (vii)      wife's daughter;

                  (viii)      son's wife;

                  (ix)      grandson's wife;

                  (x)      wife's granddaughter;

                  (xi)      brother's daughter; or

                  (xii)      sister's daughter.

            (2)      A woman may not marry her:

                  (i)      grandmother's husband;

                  (ii)      husband's grandfather;

                  (iii)      father's brother;

                  (iv)      mother's brother;

                  (v)      stepfather;

                  (vi)      husband's father;

                  (vii)      husband's son;

                  (viii)      daughter's husband;

                  (ix)      husband's grandson;

                  (x)      brother's son;

                  (xi)      sister's son; or

                  (xii)      granddaughter's husband.

            (3)      An individual who violates any provision of this subsection is guilty of a misdemeanor and on conviction is subject to a fine of $500.