Pennines at Reply #1 mentioned the gap between the 1850 John Graham - Mary Ellen Thompson marriage and the 1859 baptism of their son Rowland and the likelihood of there being more children. There is also a slight gap between the baptism of Roland in 1861 and the start of civil registration in 1864. I couldn't find any more 'child' baptisms online for this couple, but there's more than one way to cook an egg... so I wonder if the following might be four more daughters of John Graham and Mary Ellen Thompson - and sisters to William Thompson Graham. See what you think.
Daughter #1I noticed a transcript of what looks like an adult baptism on 15 November 1883 in Holy Cross RC church, Belfast, for a Mary Helena Graham, parents recorded as John Graham and Mary Helena Thompson, critically, the address was 'Shankill Road' and an annotation said that Mary Helena was being baptised as a 'Protestant Convert'. When I went looking for a potential marriage for this person, I found a transcript of a church record for a marriage on 5 June 1886 in St. Mary's RC church, Belfast, of a Mary Ellen Graham to a William John Anderson, the transcript identified both parents for bride and groom, in Mary Ellen's case, the parents' names were recorded as John Graham and Mary Ellen Thompson.
Here is the civil registration for that marriage, note that Mary Ellen's father was recorded as 'John Graham
dead':
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1886/10833/5951651.pdfI found births for quite a few children to this couple and the family was then easy to find in the 1901 census:
http://www.census.nationalarchives.ie/pages/1901/Antrim/Falls/Leeson_Street/951727/Mary Ellen's birthplace of 'Londonderry' in that 1901 census return was a surprise, the relevant 1911 census return showed the same birthplace for her, but the big break came with the inclusion of an 83 year old widowed Belfast-born grandmother Mary Ellen Graham in that 1911 household (I'm not too put off by her religion, they probably just scribbled the same down for everyone):
http://www.census.nationalarchives.ie/pages/1911/Antrim/Falls__Belfast_/Leeson/181260/A quick search for a death registration for the grandmother brought back the following one some 8 months after the 1911 census was taken, while the age is quite a bit out, I think it pretty well has to be her, since her address of 228 Leeson Street is an exact match for the 1911 census return address, and her description is given as 'Widow of John Graham, a Shoemaker':
https://civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1911/05383/4502348.pdf Going back for a moment to review Mary Ellen the daughter, she was recorded as 22 at marriage, 35 in the 1901 census and 46 in the 1911 census, which of course places birth around 1864-66, but I couldn't find a civil birth registration, so she was either not registered or I'm guessing the various ages were slightly understated and that Mary Ellen Graham's birth slots into the gap between Roland in 1861 and the start of civil registration in 1864. Why born in Londonderry? I don't know.