Aga Khan ' s bride - to - be as a baby . India : Sarah ( Sally ) Croker Poole , who later became Lady James Crichto - Stuart , is pictured sitting on her father ' s knee in India in late 1940 .Lady James ' father , Lieut - Colonel Arthur Croker Poole served with the British Army in India . It wa announced on the 7th October that Lady James has become engaged to his Highness the Aga Khan , one of the world ' s wealthiest bachelors . 10 October 1969