Wivenhoe, I have from the Sydney Benevolent Asylum a printed list of the admission/discharge details of the Briggs members that I requested. I've asked for all relevant documents about them. This will take a bit longer and there is a fee.
I haven't been able to see a marriage document for Ann and George brown yet. Just on Ancestry trees and on the marriage registration that I have for Ann and third husband Frederick Rice.
Not sure what you mean about John's birth being after the death of Charles H Briggs 1858.
Sandie.
https://trove.nla.gov.au/newspaper/article/263975349 Yass Courier 9 July 1864.
On the 5th of July, at the Wesleyan Church, Gunning, by license, by the Rev. W. Hill, Mr. Simon Brown widower, to Mrs. Ann Frances Bryan, widow, both of Frankfield; New South Wales.
A submitted tree has that marriage to support their belief that Ann, the widow of William BRIGGS, married a Mr Brown who died at Muttama 23 June 1876. I expect that marriage will be NSW BDM 3451/1864, and I expect it to have the usual elusive blanks, just as I expect her next marriage will also have elusive blanks. Annie Frances BROWN next married Frederick RICE 27 December 1876. NSW BDM 2802/1876.
Here is a thread from the NSW resources board here at RChat. I did this thread up years and years ago, and it is now quite long. But it explains about those elusive blanks in columns 5,7, 9 and 10 of the NSW BDM marriage certificates (same column numbers whether landscape or portrait, just the location of the endorsement by NSW BDM for reconciliation can vary).
https://www.rootschat.com/forum/index.php?topic=546609.0Please do consider obtaining fresh official transcriptions. Here is another link re NSW official transcription services.
https://www.rootschat.com/forum/index.php/topic,300394.0.html I am attaching a snip showing the endorsement in 1915 of a Presbyterian marriage (Scots Church, Sydney) and they had progressed through 356 church registers (that's not just Presbyterian ones !) by that stage, when the admin staff (clerks) were needed either to pass medicals to enlist or if not fit enough, to at least be available for all the clerical admin duties supporting the AIF. All longhand written info at that time was recorded on pre-printed forms, no typewriters except for official letters.
JM