Mary Darcy, Countess of Holderness

English countess (1720–1801)

Parents

• Constantia Van-der-Beck
• Francis Doublet

Children

• George Darcy, Lord Darcy and Conyers
• Thomas Darcy, Lord Darcy and Conyers
• Amelia Osborne, Marchioness of Carmarthen

Partners

• Robert Darcy, 4th Earl of Holderness