Suzanne,
There are several trees on Ancestry with this family (eg the Ferguson family tree). I am not sure that all the information on them is completely accurate. I think 2 different families may have been mixed up. Common enough on Ancestry.
One tree has Thomas & Elizabeth (maiden name apparently Milligan) with children Esther 12.8.1893, Walter c 1893, Evangeline c 1890 and Edith 31.8.1905.
I found a birth for an Edith Kelly on 31st August 1905 in Belfast. Father Thomas & mother Elizabeth Johnston:
https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1905/01776/1698457.pdf
That in turn takes me to this family in the 1901 & 1911 censuses:
http://www.census.nationalarchives.ie/pages/1901/Down/Ormeau/Glentoran_…
http://www.census.nationalarchives.ie/pages/1911/Down/Ormeau/Richardson_Street/216956/
This looks to be their marriage in 1888 in Belfast:
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_re…
The Ancestry trees have Thomas dying on 24.9.1942. However I think that is a different Thomas who was an accountant.
Kelly Thomas Gaw of "Elsieville" 6 Morwyn Avenue Donaghadee county Down retired accountant died 26 September 1942 Probate Belfast 19 April to Jane Kelly the widow. Effects £675 6s. 8d.
Likewise they have Elizabeth dying on 7th Aug 1921 but I think that’s the “other” Thomas Kelly’s 1st wife.
http://www.census.nationalarchives.ie/pages/1901/Down/Ormeau/Glentoran_Street/1210401/
Here’s the other family in the 1911 census:
http://www.census.nationalarchives.ie/pages/1911/Antrim/Windsor_Ward/Cranmore_Gardens/168636/
I’ll assume your family is the one in Richardson St in 1911. If so, what would like to know about them?