“1939 indexes show a Norah Armstrong born 1879 living in Manchester - would she be your ancestor?”
I was not aware of the 1939 register until the you posted the above.
It is “my” Norah, no doubt at all despite the couple of discrepancies.
Her 1941 death certificate shows address as “3 Redburn Road”
The 1939 register says “5 Redburn Road”
Her dob is Feb 1879.
But, on all other English records her age back calculates to 1874.
It is my grandmother because of the proximity of the address in Redburn Road and because of the other household members.
There were 6 in the household but 3 are sealed.
My father is the Arthur mentioned, the Ann also shown was his first wife.
How was the 1939 register compiled?
Was it from a verbal statement or a written return from the people listed?
Either way, a 3 in the address could easily be misread as 5.
The 1879 birth is certainly an error as all other references to same person give us 1874! (bar the Irish record which gives 1872).
Tantalisingly close but still a, (now very small), doubt about Honora being Norah.
It is more the lack of any Irish evidence to the contrary that seals it, i.e. other similarly named births or a later marriage in that period and in that geographical area.