Natalia Grosvenor, Duchess of Westminster
Natalia Ayesha Grosvenor, Duchess of Westminster is the wife of Gerald Grosvenor, 6th Duke of Westminster.
The sisters maternal grandmother was born Countess Anastasia de Torby , younger morganatic daughter of Grand Duke Michael Mihailovich of Russia by his wife Countess Sophie von Merenberg, morganatic daughter of Prince Nikolaus of Nassau by his wife Natalya Aleksandrovna, Pushkins younger daughter.
Source: Wikipedia