Pari gbolohun ti o tẹle: Oluwa Iveagh (ti a mọ ni Benjamin Iveagh) ni a bi sinu idile Anglo-Irish Guinness, ti o jẹ ọmọ Arthur Onslow Edward Guinness, Viscount Elveden, ati Lady Elizabeth Cecilia Hare, ọmọbinrin ti Richard Hare, 4th Earl of Listowel. Bàbá rẹ̀, Viscount Elveden, jẹ́ ọ̀gágun nínú Ẹ̀gbẹ́ ọmọ ogun tó ń gbógun ti ọkọ̀ akẹ́rù, 55th (Suffolk and Norfolk Yeomanry) Anti-Tank Regiment of the Royal Artillery.
Belgium ní February 8, ọdún 1945. Ní ọdún 1947, ìyá rẹ̀ fẹ́ Edward Rory More O'Ferrall.