William Cecil, 5th Marquess of Exeter Marquess of Exeter (1876-1956) (1876–1956) Parents Isabella Whichcote Brownlow Cecil, 4th Marquess of Exeter Children Martin Cecil, 7th Marquess of Exeter Lady Romayne Cecil David Cecil, 6th Marquess of Exeter Lady Letitia Cecil Partners Myra Orde-Powlett