Maryland Estates and Trusts Section 1-202

      (a)      No person who has received an absolute divorce from the decedent or whose marriage to the decedent has been validly annulled is a surviving spouse.

      (b)      No person who has voluntarily appeared in a proceeding in which an absolute divorce between the decedent and the survivor, or an annulment of their marriage was obtained, even though not recognized as valid in this State, is a surviving spouse. This subsection does not apply if the parties to the divorce or annulment subsequently remarry each other.

      (c)      No person who participates in a marriage ceremony with a third person, after a decree or judgment of divorce or annulment obtained by the decedent, is a surviving spouse.

      (d)      No person who has been convicted of bigamy while married to the decedent is a surviving spouse.