Charlotte Lee, Lady Baltimore (23 March 1678, – 1 February 1721,, was an English noblewoman, and granddaughter of King Charles II of England and his mistress Barbara Villiers. She married in 1699, Benedict Leonard Calvert, 4th Baron Baltimore, from whom she separated in 1705; she later married Christopher Crowe. She was the mother of Charles Calvert, 5th Baron Baltimore, and of Benedict Leonard Calvert, who was Governor of Maryland from 1727 to 1731.

Benedict Swingate Calvert was a planter, politician and a Loyalist in Maryland during the American Revolution. He was the son of Charles Calvert, 5th Baron Baltimore, the third Proprietor Governor of Maryland (1699–1751). His mother's identity is not known, though one source speculates that she was Melusina von der Schulenburg, Countess of Walsingham. As he was illegitimate, he was not able to inherit his father's title or estates, which passed instead to his half brother Frederick Calvert, 6th Baron Baltimore (1731–1771). Benedict Calvert spent most of his life as a politician, judge and planter in Maryland, though Frederick, by contrast, never visited the colony. Calvert became wealthy through proprietarial patronage and became an important colonial official, but he would lose his offices and his political power, though not his land and wealth, during the American Revolution.