Hi,
From your earlier research it looks like you have already found Margaret MACINTOSH nee MURPHY in the census, can I just confirm that this is her,
1891 RG12/4049 f.58 p.21 Stockton on Tees, Durham
Margaret MACINTOSH age: 26 born: Middlesbrough
1901 RG13/4626 f.108 p.2 Stockton on Tees, Durham
Margaret MCINTOSH age: 37 born: Middlesbrough
Stockton on Tees, Durham
Margaret MCINTOSH age: 49 born: Middlesbrough
If so then it looks like she could possibly have been born later than 1861, she seems to get older on each census, usually it's younger
As she always gives her POB as Middlesbrough and looking where she lives after being married I wonder if this could be Margaret in 1881,
1881 RG11/4895 f.24 p.42 Stockton, Durham
Cherry Lane
Margaret MURPHY Lodger Unm 17 Domestic Servant Yorks Middlesbrough
I can only find the above Margaret MURPHY born Middlesbrough in 1881, Middlesbrough registration district wasn't created until 1875
http://www.ukbmd.org.uk/genuki/reg/districts/middlesbrough.html so I think this could be her birth registration.
Margaret MURPHY Jul-Aug-Sep Q 1863 Stockton 10a 27
You mention in another post that you have Margaret's birthday as 23 June 1861, this could be the right quarter for her registration as there was 42 days to register a birth. I realise the year is wrong but I've often found people whose year of birth can change but the day and month of their birthday are always right.
Regards,
Daisy