James Darcy English politician (1617–1673) Parents Conyers Darcy, 7th Baron Darcy de Knayth Dorothy Belasyse Children James Darcy, 1st Baron Darcy of Navan Siblings Marmaduke Darcy Mary Darcy Ursula Darcy Henry Darcy Conyers Darcy, 1st Earl of Holderness Thomas Darcy Grace Darcy Barbara Darcy Dorothy Conyers Darcy Sir William Darcy Margaret Darcy Anne Darcy Partners Isabel Wyvill