Isabelle Raymonde de Peyronnet, Marchioness of Sligo (1841–1878)
Isabelle Raymonde Browne, Marchioness of Sligo (1878–1927) (1841/2–1927)
Daughter of Jules, vicomte de Peyronnet. Married George John Browne, third marquess of Sligo (1820–96) in 1878.