Hi Piffy
I expect you'll be on soon

I've been looking at my 'stuff'. There seem to have been 2 Thomas and Mary Edwards having children baptised in Chirk - one pair living at Wern Weston, in ST Martins parish, Shropshire and one pair obviously working at Chirk Castle. Eitehr could be the parents - or someone else entirely. Wern Weston is near the pub where Job eventually settled and Bronygarth, where Job was in 1841, and Chirk Castle estate have links

There's a possible Thomas and Mary Edwards on the 1851, Weston Rhyn (same place as Wern Weston really) - Thomas, aged 60, born Nantyr (beyond Glynceiriog) and Mary, 62, born Llansantfraid (? Glynceiriog or other).
I've also found a possible Edward and Elizabeth Williams in 1841 in Llanymynech but can't find them in 1851.
I think we should now wait for your certificates to arrive - mustn't jump the gun

Gadget
