Isabella Henrietta Poyntz born 1771; died 1843 November 29 (1771–1843) Parents William Poyntz Isabella Courtenay Children Edmund William Boyle, Viscount Dungarvan Richard Cavendish Boyle Robert Edward Boyle Charles Boyle, Viscount Dungarvan John Boyle Siblings Georgina Poyntz Charles Courtenay Poyntz Charlotte Louisa Poyntz Mordaunt Montagu Poyntz William Stephen Poyntz Carolina Amelia Poyntz Partners Edmund Boyle, 8th Earl of Cork