Clare FitzRoy, Countess of Euston British official (born 1951) (b. 1951) Parents Antonella Kerr, Marchioness of Lothian Peter Kerr, 12th Marquess of Lothian Children Lady Isobel FitzRoy Lady Louise FitzRoy Lady Emily FitzRoy Lady Charlotte FitzRoy Henry FitzRoy, 12th Duke of Grafton Siblings Lady Cecil Kerr Lady Mary Kerr Michael Ancram Elizabeth Scott, Duchess of Buccleuch Ralph Kerr, 14th Marquess of Lothian Partners James FitzRoy, Earl of Euston