Lady Mary FitzGerald (1777-1842) (1777–1842) Parents William FitzGerald, 2nd Duke of Leinster Emilia St. George Children Emilia Olivia Ross Mary Jane Ross Charles William Frederick Augustus Lockhart-Ross, 8th baronet Siblings Charles Fitzgerald Isabella Charlotte de Rohan-Chabot Lady Elizabeth FitzGerald George FitzGerald, Marquess of Kildare Lady Olivia FitzGerald Lady Emily FitzGerald Augustus FitzGerald, 3rd Duke of Leinster William Fitzgerald Lady Cecilia FitzGerald Partners Sir Charles Lockhart-Ross, 7th Baronet