I have put this out in the hope someone else may be chasing the same name. William Casemore Knibbs was born in Quainton, England in 1863. He married Sarah Elizabeth Hunter in Queensland on 10th February 1888. I have found them on several census returns. I have been told - but cannot confirm - that they had a child Queenie Elizabth in 1898 who went on to marry Alfred J. Passmore. They also had a son called James, but have no dates. I cannot find out much more about them.