Good to hear from Carl Coleman. I believe that he is correct. His father IS the 2nd oldest TT winner. The oldest being Ken Kavanagh (born 1923). Second Rod Coleman (1926) . Next oldest would be Cecil Sandford (1928), followed by Luigi Taveri(1929), three days older than Carlo Ubbiali .
I reckon that John Surtees is probably the next along the line, (1934)!
Please pass on my best wishes to your father, who would remember my father (Allan Jefferies), who for many years was the Riders Liaision Officer, and Deputy Clerk of the Course.