Joshua Macmillan (1945-1965); second son of Maurice Macmillan, Viscount Macmillan of Ovenden, and Hon. Katharine Ormsby-Gore (1945–1965) Parents Katharine Macmillan, Viscountess Macmillan of Ovenden Maurice Macmillan Children Siblings Adam Macmillan Rachel Macmillan David Macmillan Alexander Macmillan, 2nd Earl of Stockton