Mary Browne (died 1684) (1603–1684) Parents Jane Sackville Anthony-Maria Browne, 2nd Viscount Montagu Children John Petre, 5th Baron Petre Mary Petre Thomas Petre, 6th Baron Petre William Petre, 4th Baron Petre Siblings Lucy Browne Hon. Frances Browne Francis Browne, 3rd Viscount Montagu Anne Browne Mary Browne Catherine Browne Partners Robert Petre, 3rd Baron Petre