Searching for information on:
Edward Stanton (born circa 1817 in Westport, County Mayo) married Margaret Grady 19 January 1844 in Westport, County Mayo.
Edward's father: Walter Stanton (born circa 1790).
Edward's mother: Marion Green.
Margaret's father: Patrick Grady (born circa 1790).
Margaret's mother: Anne Maguire (born circa 1790).
Morning
The Church records for Westport/Aughaval begin in 1845 for baptisms and 1823 for marriages. If you go on to Roots Ireland website and subscribe you can get the details of the only marriage in Co. Mayo of an Edward Stanton to a Margaret Grady in 1844. If the townlands are listed you an have a look on the Ordnance Survey map and see the1830s-1840s map and the modern street map too, it is interesting to compare them.
If you feel it is the correct couple you may be lucky to find their children's baptism details searching the same site.
I couldn't see a marriage for Walter and Marion or for Patrick and Anne.
Just for your info also there are a couple of Stauntons buried in Aughavale graveyard:
http://www.bernieworld.net/Cemeteries/Aughavale/Aughavale%20Cemetery.htm
Best of Luck
Mrs Doyle