 Being educated at Newington College from 1918 to 1923, Robson graduated with a Bachelor of Arts (1927) and a Bachelor of Law (1930) at the University of Sydney while a resident of St. Paul's College.Robson was admitted as a Solicitor on 4 June 1930 and practised with his father at Robson & Cowlishaw.He married Lesley Alison Martin in 1931 at St Stephen's Presbyterian Church, Sydney and had two sons.