Lucy thanks for trying to help me

From what I can make out two Minnie Todds came up in relation to Ashington in England around 1904: my presumed date based on my mother's birth certificate and earlier this evening on their departure from New Zealand.
Another Minnie Todd was seemingly born in the same area around the same time. I'm wondering if this could have been her?
Before I (we) can go any further, such as who emigrated to New Zealand, I have to establish which one she may be.
There is no mention of who my grandmother's parents were on the birth certificate.
It mentions my mother's parents names (Samuel George Paterson and Minnie Todd); his profession (Stoker, Royal Navy); their ages (both 25); when they married (17th May 1929); where married (Aukland, NZ) and where my mother was born (St Helens Hospital, Aukland). It also shows where they resided at that time (22 Day Street, Newton NZ). The birth was registered on the 25th October 1929 by an F. Evans.
It shows that my grandfather was born in Glasgow, Scotland and that my grandmother was born in Ashington, England.
Just looking again and see under 'Parents (3) previous issue of existing marriage (3b) dead - Number each Sex - M - F'. I don't know what this relates to? Did they have two children who died previously?
Can anyone help here?
Thanks for helping me and I REALLY hope you continue to do so. I never knew my father at all (who he is) and don't expect ever to find him. However I do know who my mother is and hope to make sense of her life: my maternal line.
My mother NEVER spoke about her childhood as it was utterly hellish to say the least from other accounts. She was plucked / ostracised from a very large seemingly loving family at a very early age (5). Her identity was changed when she was 5 years old and she never knew who she was (who her mother was, name and where she was born) until she decided to get married and needed a birth certificate.
Regards.
Patty