Re Lyd Hen:
On her marriage cert the witnesses are:Elizabeth Oliver & Frederick Worseldine (?)Neither of these is familiar to me.
I've also just bought James Burke's death cert. It has him as having no issue too.
What I'm thinking is maybe Harold, Val, Bert and Hazel were neighbours. Lydia does seem to have been at Flett St for a long time, on her own 1913-1944, so maybe they thought of her as their mother as she had no relatives of her own-she did of course but I don't believe she was in contact with them. They might have "adopted" her.
Here's a thing, the aunt, Mary Ann Brace's husband was called George... the Brace's had 4 children, all but 1 died in infancy...
And this was in the Maitland Mercury & Hunter River Gazette 3 June 1893: "On 17-May-1898 at RC Church Denman by the Rev Father English, Cornelius, fifth son of George Grace,esq, Jerry's Plains to Elizabeth (Lily), eldest daughter of Michael Doyle esq Denman".
There were children born after 1893: Mary A 1894, Imelda C 1896 and James B 1898.As you say the electoral role 1930 suggests there were further children Michael George Harlington & Dorothea Ann (maybe wife)but if he or she was born after James B then Cornelius was becoming an old dad (he would have been 58 in 1898 when James was born). If the Cornelius Grace who died in 1931 was LydHen's father he would have been 91...which is not impossible, his own father made it to 90 but not very likely.
I'd guess the Cornelius Grace who was the father of Alice M born 1880, mother Bertha is a possible...
But bottom line, I doubt Cornelius would have used Grace as a surname because the aunts name was Brace and he would have known that even though LydHen may have got it wrong.
I'm thinking the Neil/Neale option is a more likely alias but there would have been nothing stopping him using anything!!
Oh oh another post