Mary Louisa Hermione O'Neill (born 1905) (1905–1991) Parents Lady Annabel Crewe-Milnes Arthur O'Neill Children Veronica Mary Gascoigne Bamber Gascoigne Brian Gascoigne Siblings Terence O'Neill James Colin Crewe Shane O'Neill, 3rd Baron O'Neill Quentin Crewe Brian Arthur O'Neill Sibyl O'Neill Partners Derrick Ernest Frederick Orby Gascoigne