Miles Harvey and Dinah Lee were married in Cromhall, Glos on 17 Nov 1806. The earliest baptism I found in Hawkesbury was 1812, so there could be a couple of earlier children baptised elsewhere.
they were both of the parish, both made their mark, witnesses were Bryan Pratt and William Hayward
There is burial of a Miles Harvey on 26 dec 1849 at Yate, St mary Glos. His age was 70, so birth about 1779. I think that's about 6 miles away from Hawkesbury. Could be a possibility. If so he should be on 1841 census.