Robert Grosvenor, 5th Duke of Westminster British soldier, landowner, businessman, and politician (1910-1979) (1910–1979) Parents Mabel Crichton Lord Hugh Grosvenor Children Leonora Anson, Countess of Lichfield Jane Dawnay Gerald Grosvenor, 6th Duke of Westminster Siblings Gerald Grosvenor, 4th Duke of Westminster John Hamilton Stubber Partners Viola Grosvenor, Duchess of Westminster