Following the death in office of
Lord Dunrossil in February 1961, Prime Minister
Robert Menzies recommended De L'Isle as his military honours, aristocratic background, and political experience apparently made him, according to one author, Menzies' "vision of ideal governor-general material". De L'Isle was sworn in on 3 August 1961. He continued Dunrossil's revival of the full ceremonial vice-regal uniform, but would be the last governor-general to do so. De L'Isle faced no constitutional issues during his time in office. The
Official Secretary throughout his term was
Murray Tyrrell. De L'Isle was the first governor-general since
William McKell (1947–1953) to have children living at
Government House in
Canberra, and this made him popular with the general public. However, his wife fell ill in his first year of office, and died on 16 November 1962, aged 48. Despite this, he chose to continue in office until the expiry of Dunrossil's original five-year term in 1965. Two of his daughters, Catherine and Anne, acted as the official hostesses in place of their mother. ==Retirement and death==