Just a few snippets- to help or hinder ?
Cowpen Square was a notoriously unhealthy little corner of the Township of Cowpen ( today it would have been in town of Blyth- on river's edge, just north of Golden Fleece pub/old ferry landing)
The middens/ash pits were right in middle of square of houses... several epidemics broke out.
Cowpen ( the Township) was one of five townships that comprised the Parish of Horton.
Some Horton church records are on -line in Bishop Transcripts of FamilySearch site
- mainly baptisms and burials.
Image number 191 ( page 48 in bapt. register, bapt number 380)
Bapt.21 August 1818 Andrew Reay, son of James, pitman, and Elizabeth Reay of Cowpen Square.
Image 436, ?Dec 1843 Bapt Robert Reay, son of Andrew, miner, and Hannah Reay, of Cowpen Square
Image 464, Burial no.1374, Burial 2nd July, Edward Reay of Cowpen Square, age 6 months.
Several other Reay bapts and burials within records ( but not necessarily Andrew/Hannah's )
IGI gives some clues that Andrew's mother was Elizabeth Steel.
As Pat states Berwick Hill lay with the Parish of Ponteland. But there were also Reay filk within the Parish of Stannington- close to Berwick Hill area
( There was also a Berwickhill within the Parish of Tweedmouth)
A James Reay married an Elizabeth Steel in Stannington 31 Oct 1802
( according to IGI)
Michael