Mary Clarke was born in Boston on August 17, 1741, the daughter of Richard Clarke and Elizabeth Winslow Clarke. Her father was a Harvard-educated merchant, and her mother descended from an established New England family. Mary grew up with several siblings in one of pre-Revolutionary Boston’s most visible commercial households.

Richard Clarke and his sons developed a large importing business with extensive Atlantic connections. The firm dealt in British manufactured goods and became one of Massachusetts’s leading tea importers. Mary’s childhood therefore unfolded amid warehouses, account books, arriving ships, visiting merchants, and the rhythms of credit and correspondence. The family occupied the prosperous social world around Boston’s Anglican and merchant elite.

No surviving source consulted specifies Mary’s school or curriculum. A merchant’s daughter of her rank was commonly taught reading, writing, religion, needlework, household management, and polite accomplishments, but those subjects should be understood as historical context rather than a documented personal syllabus. Her mother’s management of a large urban home would have provided practical preparation for marriage and motherhood.

Mary came of age during the Seven Years’ War, when Boston’s shipping and imperial connections expanded even as taxes and wartime regulation sharpened political tensions. The Clarke family’s later Loyalism was rooted in these commercial and cultural ties to Britain. Mary died before the Tea Party made her father’s firm famous, but the alliances and assumptions that shaped that controversy were already present in her youth.

In 1761 Mary married Samuel Barrett, another Boston merchant. The surviving record places the marriage intention in late August, shortly after her twentieth birthday. The union linked two commercial families and quickly produced children, including a daughter, Sarah, born in 1763. Mary’s adult life was tragically short: she died on May 8, 1764, at only twenty-two. Because she left few personal papers and never reached the Revolutionary era, her early life is best reconstructed cautiously through the well-documented Clarke household—wealthy, transatlantic, socially prominent, and increasingly tied to the imperial trade that would divide Boston.