Sir Robert Henry Muir Mackenzie of Delvine, 6th Bt. (1917-1970) (1917–1970) Parents Kate Brenda Blodwen Jones Sir Robert Cecil Muir Mackenzie of Delvine, 5th Bt. Children Charmain Miranda Muir Mackenzie Sir Alexander Alwyne Henry Charles Brinton Muir Mackenzie of Delvine, 7th Bt. Partners Charmian Cecil de Vere Brinton