(Kenneth) Frank "K.F." Coles (19 April 1896 - 2 April 1985) was knighted in 1957, henceforth known as "Sir Kenneth".
Norman Cameron "N.C." Coles (10 September 1907 - 24 November 1989) was born to George (senior)'s second wife Ann Cameron, née Topp, in Victoria but was mostly educated in Tasmania.