Conrad O'Brien-ffrench British Secret Intelligence Service Officer (1893–1986) Parents Winifred Thursby Henry Albert de Vreque O'Brien-ffrench, 1st Marquess of Castel Thomond Children Christina Laetitia O'Brien-ffrench John Valentine O'Brien-ffrench Rollo Acheson O'Brien-ffrench Siblings Winifred Gisela Yvonne Castelthomond O'Brien-ffrench Rollo Adrien Vladimir Thursby Marie Altieri O'Brien-ffrench Alexis Evelyn Henry O'Brien-ffrench Partners Maud Astrid Tarras-Wahlberg Rosalie Isabelle Baker
