Grace Gilbey, 8th Baroness Vaux of Harrowden British peer (1887–1958) Parents Hubert George Charles Mostyn, 7th Baron Vaux of Harrowden Eleanor Margaret Matheson Children Peter Gilbey, 9th Baron Vaux of Harrowden John Gilbey, 10th Baron Vaux of Harrowden Mary Agnes Margaret Gilbey Hon. Mary Agnes Margaret Gilbey Siblings Dorothy Alice Mostyn Gladys Flora Mostyn Partners William Gordon Gilbey