Maryland Family Law Section 9-301

      (a)      In this subtitle the following words have the meanings indicated.

      (b)      (1)      "Lawful custodian" means a person who is authorized to have custody of and exercise control over a child who is under the age of 16 years.

            (2)      "Lawful custodian" includes a person who is authorized to have custody by an order of a court of competent jurisdiction in this State or any other state.

      (c)      "Relative" means:

            (1)      a parent;

            (2)      a grandparent or other ancestor;

            (3)      a brother;

            (4)      a sister;

            (5)      an aunt;

            (6)      an uncle; or

            (7)      an individual who was a lawful custodian before the commission of an act that violates § 9-304 or § 9-305 of this subtitle.