https://www.freebmd.org.uk/September quarter 1872 Warrington volume 8c page 239
Patrick Foy and Bridget O’ Brien are on the same page.
Here is information re ordering.
https://www.freebmd.org.uk/Certificates.htmlYou won’t get birth certificates. Irish registration did not begin until 1864 so you would be looking for baptismal records. For this you would need to know parish details really. However, if you got the marriage certificate, you would have fathers’ names.
With regard to the older children, these records might be a possibility
William O’Brien b 1868 (no mother’s maiden name)
March 1868 Warrington 8c 191
1871
Warrington workhouse
Bridget O’Brien 33 yrs unmarried Farm Servant b Ireland ‘Mildough’ (transcribed)
John 11 yrs
William 3 yrs
Mary 18 months
Children b Warrington