Hi
I've been trying to trace your G. grandparents, but they were born at the worst time. Just a little too early to have their mothers name on the BMD and nothing to link them to their parents. If you have any other little bits of info like where they lived, any siblings any names etc this may help. It may be an idea to get their mge cert which will give you their father's names. This is the link to the GRO
http://www.gro.gov.uk/gro/content/certificates/
However I did find one record which may be your G. Grandmother.
Mary A Gorman b O/D 1911 Prescot ref 8b 1555 mother Brady. She is just too late to be on the latest census. She may have had a twin, Vincent, same birth details
I can't find a mge of Gorman to Brady but I did find this family.
1901 census
GORMAN, Patrick Head Married M 40 1861 Underground Colly Labourer Ireland
GORMAN, Alice Wife Married F 28 1873 Aldershot Wiltshire
BRADY, Catherine Mother-In-Law Widow F 44 1857 Ireland
GORMAN, William Son Single M 20 1881 Coal Miner Drawer Ireland
GORMAN, Lizzie Daughter Single F 18 1883 Ireland
GORMAN, Dinah (may be Denise) Daughter Single F 16 1885 Ireland
GORMAN, James Son Single M 14 1887 Colly Surface Labourer Ireland
GORMAN, John Son Single M 12 1889 Ormskirk Lancashire
GORMAN, Patrick Son Single M 10 1891 Lathom Lancashire
GORMAN, Michael Son Single M 8 1893 Ireland
GORMAN, Joseph Son Single M 4 1897 Ireland
GORMAN, Ellen Daughter Single F 0 (1 MOS) 1901 Skelmersdale Lancashire
RG number:RG13 Piece:3546 Folio:183 Page:6
Registration District: Ormskirk
Sub District:Lathom
Enumeration District:10
Ecclesiastical Parish: St Paul's Skelmersdale
Civil Parish:Skelmersdale
Address: 7, Clegg Street, Skelmersdale Lancashire
Alice is a 2nd wife, married around 1900 (can't find it, may have been in Ireland). I can find them in 1891 and on the latest, but so far not pre 1891 Pats first wife was an Elizabeth
dave