James or William Gillespie, b. ca 1885, Antrim but raised in England

[scotmum]

Possibile death for Mabel Henrietta Gillespie nee Owens:

Deaths Jun 1922   
Gillespie    Mabel H    37    Islington    1b   267    

Mis-Indexed on GRO as:

GILLEOPIE, MABEL  HENRIETTA     37 
GRO Reference: 1922  J Quarter in ISLINGTON  Volume 01B  Page 267

Burial record at St James, Enfield records abode as Royal Northern Hospital.

So, William would not have been free to marry Kitty/Catherine/Kathleen Storrow before 1922.

In addition to the 1919 Gillespie/Storrow birth in Mitford district, there were two Gillespie/Storrow births in Liverpool district in 1925 and 1927.

[AlanBoyd]

Mainly duplicating previous post:

If the John Gillespie in 1921, Liverpool is JWMG then he was still married to someone else:

1911 census
JWMG, 26, confidential clerk, born Belfast
Mabel Henrietta Gillespie, 26, born Beckenham
Sarah Ann Owens, 51, mother [-in-law], born Beckenham

A marriage 1910 Q3 James W Gillespie and Mabel H Owens

1921 census
The mother and daughter from the 1911 record are at an address in Islington as aunt and cousin, birthplaces match. Daughter is married, no age given, occupation 'musician' [surname is mistranscribed as 'Josephine', image is clear].

death 1922 Q2 Mabel H Gillespie, 37

[scotmum]

Also, there was a Nita Gillespie birth in 1916 with MMN Owens, possibly the same Nita of a number of newspaper articles (concerning an accident), in 1931. That Nita was then 15 and lived at Leys Avenue, Letchworth Garden City.

However, this Nita was possibly born to a different Gillespie/Owens couple, as the Nita of the 1931 article seemed to be living with her parents (not named), at the time of her accident.

Possibly:

Marriages Jun 1906 
Gillespie    William Simon        Wrexham    11b   463   
Owens    Amy Elizabeth        Wrexham    11b   463   

[AlanBoyd]

Possibly:

Marriages Jun 1906
Gillespie    William Simon        Wrexham    11b   463   
Owens    Amy Elizabeth        Wrexham    11b   463   

There is a Nita Gillespie with those parents in 1921 in Shropshire.

[AlanBoyd]

wrt reply #15 there is an item on Dolly Storrow here:

https://storrow.one-name.net/index.php/2021/06/24/dolly-and-subkhano/

concluding that she was Mary Elizabeth Storrow, daughter of Robert and Mary Ellen Storrow, and younger sister of Catherine Maud Storrow (Kitty Storrow). The same author has published an article about Kitty Storrow:

Kitty Storrow -- a 'charming and gifted young artist', in the Journal of the Guild of One-Name Studies, 14, issue 3, July-September 2021, pp.18-21 available at https://one-name.org/guild-journal/

Unfortunately this issue of the journal is not free to view (articles are free after 3 years).

[DianaCanada]

I want to help everyone with helping me untangle the mystery that was/is James William Morrison Gillespie.  You all have really gone above and beyond.
I will sift through all this information and see what my conclusions are.
I wonder what his father the joiner/builder thought of his son's life, his only boy!

[DianaCanada]

Also, there was a Nita Gillespie birth in 1916 with MMN Owens, possibly the same Nita of a number of newspaper articles (concerning an accident), in 1931. That Nita was then 15 and lived at Leys Avenue, Letchworth Garden City.

However, this Nita was possibly born to a different Gillespie/Owens couple, as the Nita of the 1931 article seemed to be living with her parents (not named), at the time of her accident.

Possibly:

Marriages Jun 1906 
Gillespie    William Simon        Wrexham    11b   463   
Owens    Amy Elizabeth        Wrexham    11b   463

This couple likely have another daughter, Alison, registered in Jun 1907 in the same district as Nita was registered.  William Simon was a farmer and vet.   Also found Nita on the 1939, single, a cake baker. 

[DianaCanada]

Thanks again for everyone's help.  I was able to find an illustration for sheet music (actually for sale) for Til We Meet Again with Kitty on the cover.  She seems to have quite a career.  There are dozens of references to her in the British Newspapers Archive.  The Storrow one-name-study was helpful, too.

I was able to find information on their three children, and the fact that she and James were visiting her sister Margaret (Evans) in Liverpool on the 1921. 
No probate found for either of them.
Interesting that they never married, as after Mabel's death, not likely any impediment.

[scotmum]

Perhaps Kitty was still married to Robert John Nichol, have you checked what became of him? They seemingly married in Capetown, and he intended returning to South Africa in 1917, per an article in The Stage.