Md. Code, Real Property § 8–106

If a landlord, having only an estate for life, dies on or before the day on which the rent that has been earned is payable and the landlord’s death terminates the leasehold estate, the landlord’s personal representative may recover from the tenant the full amount of the rent if death occurs on the day the rent is payable or a proportionate share of the rent if death occurs before this day.