... or maybe she was never found.
Is there anything to be read in to the sequencing of those dates?
'Twould be interesting to understand the exact context from the register more.
Perhaps she went missing on 19-JUL-1924, but was not formally declared dead till 10 years later.
[I've seen this 10 year delay in another context.]
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There was huge social stigma associated with suicide, so it is unlikely to have been reported in the press. Such was regarded as a "shame" that the family would want to cope with privately.
Such an act was (?and still is) treated legally as a crime.
[Motivated originally by religious reasons, being regarded as an insult to your Creator - you are meant to get on with doing good deeds within the given Earthly Paradise.]
Suicides used to be buried in unconsecrated ground away from the church.
[e.g. there was one at the cross-roads at Muckamore.]
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Guess PRONI would have to be the starting point for the coroner's records.
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Josephine lost her younger brother James in Belgum aged only 16 in 1915 during WWI.
www.cwgc.orgPerhaps that event, or the loss of her own sweetheart, proved too much to bear.
[Also, sister Agnes who died young may have been a long invalid.]
Some other HAVERON entries in there might help you to sort things out.
e.g. Where were John (9) and Josephine (7) in 1901?
[When the rest of the family appear to be in Sheriffsland, Kilwaughter.
Were they "abroad" with relatives in Newcastle?]
N.B. They declared themselves as holding to the Pb religion then.
Perhaps Josephine changed her name on being formally confirmed in to CoI?
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Hope that those thoughts help you a bit.
Capt. Jock