Mr. Jackman was educated at Upper Canada College, the University of Toronto and the London School of Economics. He was Chairman of the Board of National Trust Company and the Empire Life Insurance Company, plus several other prominent Canadian corporations. In 1964 he married Maruja Trinidad Duncan. Mr Jackman was appointed Lieutenant Governor in 1991 and became a Member of the Order of Canada the same year. He focused on support for the arts, history and national unity during his time in office. He served until 1997, and was then appointed to the Order of Ontario in 1998. He was promoted to Officer in the Order of Canada in the year 2000.