Who married Charles Calvert, 5th Baron Baltimore?

Charles Calvert, 5th Baron Baltimore, (29 September 1699 – 24 April 1751) was a British politician and colonial administrator who served as the proprietary governor of the Province of Maryland. He inherited the title to Maryland aged just fifteen, on the death of his father and grandfather, when the colony was restored by the British monarchy to the Calvert family's control, following its seizure in 1688. In 1721 Charles came of age and assumed personal control of Maryland, travelling there briefly in 1732. For most of his life, he remained in England, where he pursued an active career in politics, rising to become Lord of the Admiralty from 1742 to 1744. He died in 1751 in England, aged 52.