Sir Patrick Muir Renison, CMG (1950) KCMG (1955), was born on 24 Mar 1911 in Rock Ferry, Cheshire, England. He was educated at Uppingham School and Corpus Christi College, Cambridge. In 1932, he was selected for the Colonial Administrative Service but was seconded for work in the Colonial Office, where he remained for three years before going overseas. In 1936, he married Eleanor Hope Gibb and in the same year was appointed to the Ceylon (Sri Lanka) Civil Service. He remained in Ceylon (Sri Lanka) until 1944, holding a variety of Civil Service posts in many parts of the country as well as in the Secretariat.

When the Colonial Office began to make plans for postwar recruitment to the Colonial Service, Renison was asked to assist in this work. In 1945, he visited many parts of the Commonwealth and was then sent to establish a recruiting office in India. He returned to England in 1947 and was appointed Assistant Secretary in the Colonial Office.

In Feb 1948, Renison took up his first appointment in the West Indies as Colonial Secretary of Trinidad and Tobago. On several occasions, he also acted as Governor; he represented the Colony at the Governors' Conference in Barbados in 1949, as well as at the opening of the University College in Jamaica in 1950. Renison was appointed as Governor of British Honduras (Belize) in 1952, and Governor of British Guiana (Guyana) in 1955 (at a time when the country was being controlled by Emergency Regulations after the suspension of the Constitution). In Sep 1955, he succeeded Sir Evelyn Barling as Governor of Kenya.

Renison was made CMG (Companion of the Order of St Michael and St George) in 1950 and KCMG (Knight Commander of the Order of St Michael and St George) in 1955. Sir Patrick Renison died on 10 Nov 1965.