good detective work - not sure re parents of John Duff however - he is consistent with age + father being Robert in all records + pre 1st marriage always with a Moffat family - I suspect illeg (there was a Robert Duff shop keeper) - there are 2 main Duff families (Irish origins) - one a leading member of Roman Catholic fraternity - other with links to Mormons (check out Duff on MNB) - however Braddan had given up on presentments for fornication and I can't find any illeg to a Moffat