jbs,
>Did Ross also go by Charles, or is someone else?
One of the other Aussies would be better to answer this in more detail,
Ross Smith and Charles Kingsford-Smith were both post WWI flight record setters. But they were different people. Kingsford-Smith ( or Smithy ) served with the RFC and did his great flights in the 20's and 30's. Ross Smith was ex-AFC and his brother Keith was ex-RFC, they did it in 1919 when they flew from England to Australia in a Vimy. Both Ross and his brother Keith got knighted for it I believe. Kingsford-Smith got knighted for his flights as well.
cam