Lady Kennard was the mother of Alexandra Hamilton, Duchess of Abercorn, and Natalia Grosvenor, Duchess of Westminster.
She was also an aunt of Maralyn Ramsay, Countess of Dalhousie, the sister of Myra Alice Wernher, Lady Butter, and a first cousin once removed of George Mountbatten, 4th Marquess of Milford Haven.
She was the godmother to the Queen's second son, Prince Andrew, Duke of York, who attended her funeral in person.