I have the certs but need a hand...You mentioned :
The two records between them have an excellent example of "death certificate promotion". On the register entry for Agnes, she was shown as "widow of William Moreland, Tramway Car Conductor"; while on his death register entry, William was shown as "Tramway Company's Labourer" !
In 1891 two of the kids are living with their married sister Mary J GRAHAM, on Dumbarton Road, a few hundred yards away from where my father was born a few years later
I have searched and have found 6 pages of Grahams...BUT not MARY JANE...in the 1891 census
Wendy