I believe you have connected the wrong Frank Burns as being Australian and Empire Welterweight champion of the 1950s George Barnes' father.
Frank Burns, (Global ID 81431) father of George Barnes was a middleweight who won the Australian title in 1921. The Frank Burns (Global ID 206798) you have linked George Barnes with was a lightweight who fought in the 1930s and won no title. Burns is a very common name in Australia.