Another after of not getting anywhere I've decided to move on a generation.
I looked closely at Sarah's children, in particular Eliza Evans : census's give birth place Hope, Flintshire.
Willium b.1835, Mary Ann b. 1836, Robert b.1841, (Eliza b.1845), Sarah b.1849, Thomas b.1851
Eliza is living at home with her family in Hope on 1861 census.
1867 Eliza marries Evan Evans
1871 she is with Evan and children Anne b.1868 and Sarah b.1871
1881 she is with Evans and 4 more children : John b.1873, Williams, b.1876, Thomas b.1878 and Hannah b.1881.
1891 she with Evan with John, William, Thomas, and 3 more kids : Oswell b.1883, Lydia b.1886 and Matthew H b. 1889.
The 1861 census is the only indication of Eliza's parents
It says father John Edwards Head, married, male 50 (1811) labourer birth place Hope, Flintshire.
It says mother
Sarah Edwards Wife, married, female 47 (1814) birth place Hope, Flintshire.
The family are living in Cymmau, Hope, Wrexham, Flintshire, Wales.
The baptism of Eliza on 6 July 1845 by John and Sarah took place in Hope, Flintshire, and states that the family were living in Cymmau.
I can find a marriage of a John Edwards of Hope to a
Sarah Foulks of Hope at Hope church on 31 January 1835.
1881 census gives John and Sarah Edwards living at Cymmau Mountain, Hope (Flint), Chester, Flintshire. All children have left.
I am confident with that all this information is correct and it leads to think that the family remained in the same area for the majority of their lives. Getting beyond is proving very difficult.
I have searched for baptisms for Sarah Foulk(e)s around 1815 but there are none in/around Hope. I can find one at Minera 26 Nov 1815 (parents John and Catherine) but Minera is in Denbighshire and some distance from Hope with no obvious link. There is another baptism of a Sarah to a John Foulkes and his wife Catherine (formerly Jones).
I can find a marriage n Wrexham of a John Foulkes to Catharine Williams (they were residing in Minera Township) but no connection to Hope, Flintshire.
All random bits of information that I don't feel happy about adding to my tree.
If anyone has any suggestions I would be so pleased. Otherwise this search is definitely ending soon.