Hello Kate,
It is a good idea to keep all information on one thread (the original thread) rather than starting a new thread - saves people from checking back and forth, and avoids duplication.
From the other thread we know that:
William A DAVIS married Sophia ALLEN in 1899 in Dubbo.
They had Joseph DAVIS in 1900 in Dubbo.
Sophia died in 1906 in Dubbo.
William A DAVIS then married Miriam A JAMES in 1910 in Dubbo.
However, we also know from the other thread that a child Alfred Stanley JAMES or DAVIS (no father named, mother Miriam) was born in 1908 in Redfern. Do you have this certificate?? Does it give the mother's name as Miriam JAMES??
One has to wonder whether Alfred was the illegitimate child of a Mr TILBY and Miriam JAMES, brought up subsequently as his own child by William A DAVIS. And perhaps the name TILBY was mentioned in the family and this is what has resulted in confusion on Alfred's marriage and death certificates. Do you have both these certs? Do they clearly give Miriam's maiden surname as TILBY? Is the name TILBY mentioned at all on birth, marriage or death certs of any of the subsequent children (see the other thread) of William DAVIS & Miriam JAMES?
TILBY is a very rare name in the NSW BDM. All I could find were three male TILBY marriages - 1879 (Orange), 1905 (Sydney) and 1956 (Sydney). The only one around the relevant time was a Stanley J TILBY marrying in Sydney in 1905. Hmmm.
But, of course, it may have been - as Jenn has suggested - that it was Miriam's father who was a Mr TILBY (Miriam, from the marriage cert, apparently having been illegitimate).
It is certainly strange that we can't find the birth of William Albert DAVIS, Gulgong, parents John & Sarah Matilda ca 1875 or the birth of Miriam A JAMES, Dubbo, mother Annie ca 1889.
JAP