Princess Ada Irene Helen Benyl Duleep Singh was a second daughter of Maharaja Duleep Singh from his second wife Ada Douglas. Not much information about her life is available but it is presumed that she led an unhappy life. She married a Frenchman, by the name of Pierre Marie Villament in Paris on the 15 March 1910. However, the Princess led a very troubled life and according to the Nice correspondent of the Petit Pariser, she was a neurasthenic, and made an attempt to end her life in 1925 by throwing herself from a window after separating from her husband in August. A year earlier she had been treated in a nursing home in England for the same disorder, but later moved back to Paris where she had taken up painting.
Tragically on the 8th October 1926 local fishermen dragged her body out from the sea, off Monte Carlo. She was apparently much aggrieved with the death of her half-brother Prince Frederick who had died two months earlier. The Morning Post quoted Princess Irene as being ‘tired of life’ and a verdict of suicide was given. She too had no children.