I do not have an internet connection in the summer months and I cannot trace any reply to you from me but forgive me if I am repeating anything.....
I have recently returned to researching my husband's Hatcher ancestry which seems to get more complicated each time I look at it! Sadly I do NOT now think that 'our' Mary was the daughter of Robert Hatch & Jane Shoebridge. Their daughter Mary seems to have married a William Holden in Biddenden in June 1814 - the clue is a witness James Hatch who may well be Robert & Jane's only other child, a son bapt in 1788. Both Holdens appear to have died in Rye.....
That said, the evidence remains circumstantial so, for the record, 'our' Mary's 3 children appear to be Harriett Hatcher (bapt St Dunstan's Cranbrook on 3 July 1808 - her father is named in an 1811 Affiliation Order as Thomas Sattin)
Mary Ann Curteis Hatcher (bapt in Smarden on 5 July 1812 only a few weeks after the baptism of James), and
James Hatcher (bapt in Maidstone on 5 June 1812 while his mother was apparently in the Bridewell, and named in a Bastardy Examination in Jan 1813 as the son of James Curteis, lab, late of Biddenden but then a private soldier in the West Kent militia).....
Hope the above is of use..... I think that Mary eventually accepted that James Curteis was not going to return and married a John Thatcher (sic) in 1819 - but any additional information would be very welcome!