Maryland Code, Estates and Trusts § 5-105

(a)(1) In this section, “serious crime” means a crime that reflects adversely on an individual's honesty, trustworthiness, or fitness to perform the duties of a personal representative.

(2) “Serious crime” includes fraud, extortion, embezzlement, forgery, perjury, and theft.

(1) A trust company;

(2) Any other corporation authorized by law to be a personal representative; or

(3) Subject to subsection (c) of this section, any individual.

(1) Under the age of 18 years;

(2) Mentally incompetent;

(3) Convicted of a serious crime, unless the person shows good cause for the granting of letters;

(4) Not a citizen of the United States unless the person is a permanent resident of the United States and is:

(5) A full-time judge of a court established under the laws of Maryland or the United States including a judge of an orphans' or probate court, or a clerk of court, or a register, unless the person is the surviving spouse or is related to the decedent within the third degree; or

(6) A nonresident of the State, unless there shall be on file with the register an irrevocable designation by the nonresident of an appropriate person who resides in the State on whom service of process may be made in the same manner and with the effect as if it were served personally in the State on the nonresident.