(27 September 1920 - 15 May 1978) his death 4 Children
Kenneth Menzies (14 January 1922–8 September 1993) Hawthorn
He married Marjorie Cook on 16 September 1949, and had six children; Alec, Lindsay, Robert III, Diana, Donald, and Geoffrey. He died in Kooyong
Robert Ian Menzies Jr (12 October 1923–1974)He never married, nor had children
Margery Heather Menzies (3 August 1928)
married Peter Henderson, a diplomat and public servant (working at the Australian Embassy in Jakarta, Indonesia at the time of their marriage, and serving as the Secretary of the Department of Foreign Affairs from 1979 to 1984), on 1 May 1955. A daughter, Roberta, named for Menzies, was born. In 1956
She was instrumental in the development of Canberra and the Australian Capital Territory, and lives in Canberra with her husband
1 child died at birth