John Davies, husband of "Mary Kelly".

He exists.  He has a researchable beginning and an end to his life. Within his framework is 'Mary Kelly,' who appears to have a child. Although, if this offspring is female ...
Tom Cullen, wrote about Mary Kelly's abandonment by the friendly societies, or pit clubs. I wished he'd referenced his certainty. But John's widow is in print and reported.
So what did Tom Cullen know? And where the hell are his notes?

Strange, Mary Kelly inspires such devotion but her acolytes fear finding her. But she's there, about two hundred or so monikers distant in the tedious genealogical trawling.
Two women, so far, have anomalies. Either would make a good story.

Mary Ann – An effeminate man.

I have no idea what this signifies, if anything, bearing in Mind Eddowes used this moniker after her drunken incarceration by the City Police: Mary Ann – An effeminate man. (L. London, 19 cent.). Passing English of the Victorian era: a dictionary of heterodox English, slang and phrase.
 5ft 7 ins is tall for a woman of the period.

John Davies (alleged husband of Mary Kelly)

Ooh, now that is intriguing. John Davies (alleged husband of Mary Kelly) according to a newspaper report, left a wife and child. It doesn't say whether a son or daughter. And why, oh why, couldn't it have given her name? It merely states the wife of John Davies.
Mary Kelly, according to some witness statements, had a son who ranged from age seven  to eight.

The term regarding John Davies's death was stated as 'odd'.

 Tom Cullen. Autumn of Terror:

..... Davies was killed in a mine explosion. The mine-owners stalled for eighteen months before paying her a miserable pittance by way of a widow's compensation, and it was this delay which drove Mary on to the streets, first in the Tiger Bay region of Cardiff, and later in London.

 I wonder, with the caveats applied by insurance societies, the debate was over whether this was an accident. The term regarding John Davies's death was stated as 'odd'.

'It has long since been a practice in the English colliery districts, on the occasion of accidents, to make provision for the injured or survivors of the killed, by means of contributions, not only from the workmen, but also from the employers. The proceedings in earlier days were the same as those in Friendly Societies of the primitive form. Collections were first started to meet each case as it arose; in course of time, regular subscriptions were levied, and a fund was thus established, which, however, invariably proved inadequate when any great catastrophe occurred. These societies, or " pit-clubs," as they were called, being as a rule restricted to the workmen in a particular colliery, could not possibly, thus isolated as they were, bear the risks of any accident of magnitude. The consequence of this was, that as soon as any calamity took place, involving the loss of many lives and necessitating the relief of many families, they were compelled to appeal to public benevolence.'

Elizabeth Stride and the view into the yard.

In the search for Mary Kelly

I came across this:

Old Irish naming conventions

For sons

The 1st son was named after the father's father.
The 2nd son was named after the mother's father.
The 3rd son was named after the father.
The 4th son was named after the father's eldest brother.
The 5th son was named after the mother's eldest brother.

For daughters

The 1st daughter was named after the mother's mother.
The 2nd daughter was named after the father's mother.
The 3rd daughter was named after the mother.
The 4th daughter was named after the mother's eldest sister.
The 5th daughter was named after the father's eldest sister.

Which should assist in the quest for the illusive Mary.

Mary Kelly. Now there’s a coincidence.

·  Kate Eddowes called herself Mary Ann Kelly on release from jail. She was arrested for drunk and disorderly conduct on the night of her murder.

·  Elizabeth Jackson was murdered and dismembered June 1889.

·  Elizabeth Jackson’s drawers bore the name LE. Fisher.

·  Kate Eddowes’s sister was called Elizabeth Fisher.

·  The newspapers reported the murder victim’s, Mary Kelly, name as Fisher. “With regard to the drawers bearing the name ‘L E. Fisher’ on the band, and which the man Faircloth had stated had been bought at a lodging-house at Ipswich, it had been found that they belonged originally to a domestic servant at Kirkley, near Lowestoft, and had been sold as old rags by her mother while staying near her daughter in November last.” The Times, 26 July, 1889. Last November 188 was the month and year of Mary Kelly’s murder.

·  Elizabeth Jackson would walk Battersea Park to pick up her clients.

·  Mary Kelly would visit Lambeth to visit a friend.

·  Mary Kelly: approximately twenty five 5ft 7 in. tall with golden hair. Elizabeth Jackson: twenty five, and approximately 5ft 5 in. tall with bright sandy coloured hair. The two women had similar physical characteristics.

·  Eddowes partner was called John Kelly

·  Eddowes claimed to live in a shed in Dorset Street. Millers Court is a small room off Dorset Street.

·  13 Millers Court was host to not one murder’ Years later, in the room directly above the room where Mary Kelly lodged, 1898 26 November, Kate Marshall murdered her sister, Elizabeth Roberts.