Liz, Unless there is something lurking in the parish chest in the Records Office (which I doubt) then you are left with a "majority verdict". Have you searched http://nationalarchives.gov.uk/a2a/ I assume the bastardy bond indicates Ann's place of settlement as Hartland. This means either her father (or husband) had right of settlement. Have you found any removal orders? Looking at Familysearch, there only seems to be one Evans family in the parish from the beginning of the 18c. I would suggest you draw out the family tree, including deaths and confirm this from the registers. Short of tracing descendants and DNA testing, this may be the nearest you will get. Back from the 18c may be even a greater problem, Evans is a Welsh nape and Wales is just across the channel. Cheers Paul