Born in London in 1912, the son of the novelist Angela Thirkell and her first husband, James McInnes. After their divorce his mother took her two sons to Australia. Graham gained a first-class degree in history at Melbourne University, then set off for Canada to find his father. From 1938-41 he was art critic for a Toronto paper, then a lecturer at Toronto University and worked for tjhe Canadian National Film Board. He finally became a Diplomat and Ambassador.