Thanks everyone, so this is what I do know:
Mary Sunderland married James Murphy 1864
Name James Murphy
Event Type Marriage
Event Date 20 Nov 1864
Event Place Gorey, Gorey, County Wexford, Ireland
Event Place Gorey, Gorey, Ireland
Age 27
Birth Year (Estimated) 1837
Father's Name Michael Murphy
Spouse's Name Mary Sunderland
Spouse's Age 19
Spouse's Birth Year (Estimated) 1845
Spouse's Father's Name Michael Sunderland
Sarah Murphy (1869-1925) married Thomas Donnelly (1872-1946) in 1893 in Rathdfarnham and had 7 children, Joseph, Mary Emily, Marcella, Peter, James, Michael and Bridget. They lived in House 3 Kilmashogue, Whitechurch, Dublin. Sarah's parents were listed as James and Mary Murphy from Kilmashogue. Thomas's parents were Timothy and Mary Donnelly from Hollypark (but originally Wexford).
It says on the 1901 census that Sarah was born in Co. Wicklow which threw me off for a long time but I have since found on her birth cert it says Rathdown was in Co. Wicklow and not Co. Dublin so Im going with that one!
The Murphy children:
Bridget: Oct 2nd 1865 - James Murphy and Mary Sunderland from Ballinagrann, Gorey, Co. Wexford with Sarah Sunderland present at birth
Mary: March 29th 1867 - James Murphy and Mary Sunderland from (Glyn?), Gorey Co. Wexford with Sarah Sunderland (from Ballinagrann) present at birth.
Sarah: Jan 20th 1869 - Michl Murphy and Mary Sutherland* (notice name change) from Fiaserae? Rathdown, Co. Wicklow with Eliza Fuigan? from Bray Common present at birth
Michael: 17th Oct 1875 - James Murphy and Mary Sunderland from 'The Blind Lane', Kilmashogue bridge, Whitechurch, Rathfarnham
Ellen: 26th Nov - James Murphy and Mary Sutherland* (name change again) from Kilmashogue.
James: 11th April 1881 - James Murphy and Mary Sunderland from Kilmashogue with Aunt Mary Murphy present at birth
Margaret: 24th June 1883 - James Murphy and Mary Sunderland from Kilmashogue with Mary Murphy present
Esther: 28th March 1888 - James Murphy and Mary Southern* (they didn't even bother to finish her name this time!) from Kilmashogue
Sinann and Daithi: They are the birth certs that I found and yes it does like they moved around a bit but finally ended up in Kilmashogue. I guess they went where the work was, if it is indeed the same family?
I'll just post this before my computer crashes!
tbc!