Puffcat,
Thanks for trying. I'm really at a dead-end unless someone can find a lead to this particular John Maddox born 1769.
John was adamant on the 1841-1861 census returns that he was born in Bredwardine, but perhaps he lived there as a child, and was baptised in a neighbouring parish (Brobury, Letton, Moccas, Dorstone, Staunton-on-Wye or Peterchurch) church?
Only wish I had access to the microfiche for the area!