That’s interesting!!
Margaret Alice Jane’s father was Henry Walker – born in Newsham (a district of Blyth). Shelley Crescent is in this area.
1881 Henry aged 18 is living in Shiney Row Bedlington with his parents and 8 siblings. The family seems to have moved frequently with children being born in Bedlington, Barrington, and Newsham before returning to Bedlington where the last six were born.
1891 Henry. Now 28 yo and married, is living in Dr Terrace (the next street), Bedlington at the home of his wife’s parents. This is only a stone’s throw from the boundary with Choppington where Margaret AJ was christened. However, at that time he had only one child, Mary aged 3 months.
In 1901 Henry and Dorothy are living in Glebe Row, Bedlington just yards away from Doctor Terrace. They now have 3 daughters: Henrietta , Mary and Annie. Living in are two of the Dixon Family, Charles (24 yo) and Edward (21 yo) - Dorothy’s brothers. (NB: Henry has now become” Henry J”)
1911 The family have moved from the Bedlington area and are living in Newburn in the western part of Newcastle. (Henry, who himself has filled in the census form, now calls himself Harry). Two of their six children are dead. Still living at home are: Mary (20 yo, single, born Bedlington), Henry jr. (9 yo, born Bedlington) and Madge (5 yo, born Bedlington). So, the family seems to have been in the Bedlington are until at least 1896 and I believe that Madge (a common short-form for Margaret) may well be your Great nan.
It’s not uncommon in census returns for parents to write the name they commonly use for their child rather than the registered/baptismal name. My grandfather was called Francis but is always recorded as Frank in census records - because that's what his parents called him. You can see here that Henry Walker does the same thing. It might be worth having a look at this family. Do any of the names I've mentioned ring any bells? Is there any history of the family moving away from Northumberland?