Umm, that looks interesting Robyn

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I've not found our missing 2 and need to have a quick break, cause I'm reading same names over and over ...
Also, just because the NSW BDM online doesn't show a death registered, does NOT mean that a death was not reported, particularly in late 19thC
By that I mean that there's plenty of examples where BDM Sydney (Head Office) either did not receive, or did not write up into their records, the quarterly returns that the civil registrars (usually attached to the Court House, or the Police station ... ie a "secondary appointment for the Crown Sarg or the Sherrif etc) were paid to send to Sydney. It was a mish mash system until around WW1 ... Also, IF an inquest was held ... eg around 1888 (as in one of my lot) in central west NSW, then the coroner's findings were all that was needed, and NO death cert was ever required to be issued, (eg for probate, the coroner's report was sufficient evidence to permit probate action to commence).
Also, sometimes the BDM online index seems to indicate a bdm event occurred in a particular year, but errr.... the reference number is actually the year that the BDM Head Office got around to (or perhaps received the) returns from the rural registrars. I have found one instance where the transcript shows it was informed in 1884, but the transcript and online reference is clearly indexed under 1907. I then got the real deal certificate, and sure enough, death clearly 1884, and clearly registered in 1884. I wrote away to BDM and they sent my fees back with NO explanation. They did NOT ask for the cert back. I phoned. They explained the register at HO was written up in 1907. I asked for answer in writing .... that was errr .... several years ago.... I'm still waiting for the postman with that letter.
But, it happens ... So, when online looking through NSW BDM, never limit yourself to just a year or two or three, look further, particularly if the event occurred OUTSIDE of what was then Metropolitan Sydney. (any thing with a post code higher than about 2249 was OUTSIDE of Sydney until at least WW2 era).
Sorry for the chapter and verse explanation.
Cheers, JM