Highly speculative, shown as parents of James on his EH chr.
In the EH PR's in Hereford CRO there is a Mary Powell of EH Common buried 26th Dec 1818 aged 83 = YoB of ~1735, so slightly too young.
FHOnline;Groom WILLIAM POWLES Bride MARY PRITCHARD Day 29 Month 04 Year 1742 Place of marriage BYFORD (HEF) Licence? L Notes + EATON BISHOP = MADLEY. COULD be them.