Here are all the John Corfields in the St Chads Records approx 1530/1815ish.
Shropshire: Shrewsbury - St. Chad Parish Registers, Lichfield Diocese
26 Jul 1748 Corfield, John, s. of Thos: & Martha. Born 14 Jul 1748 bap. 17 Jan 1768 Corfield, Sarah, d. of John bur. 07 Apr 1776 Corfield, Elizth:, d. of John & Eleanr: Born 29 Mar 1776 bap. 07 Feb 1779 Corfield, John, s. of John & Eleanor. Born 31 Jan 1779 chr. 07 Jan 1781 Corfield, John, s. of John & Eleanor bur.
I cant help you with Lydbury north its just out of the Diocese of Shropshire, However if you want a look up here in shropshire ( Shrewsbury ), give me a shout.
Thank you very much for that information I will keep it on file. Ummmm it's interesting that John Corfield's parents, they are thought to be Thomas Corfield and Elizabeth Powell, married in Bishops Castle in 1759, do not show on your list. Rather odd too is that (as far as I know now) their first son Benjamin wasn't born until 1771 in Hurdley. I think there must have been more children before Benjamin as 12 years is a long time without having children in those days.
Many thanks for your help Pete. Best wishes Shirley xx