Hi John
Have checked the Dunwich registers and found the following for you:
Baptisms:
Butcher - John, son of William & Martha (late Martha Boast, spinster) on 16 November 1786
Butcher - John, son of William & Martha (late Martha Boast, spinster) on 14 January 1787
Can't see a matching burial for the first John, so I assume this was a private baptism followed by one in Church a few months later. (I say "in Church". Dunwich didn't actually have a church at this time.)
Burials:
Butcher - Martha, married woman, on 6th (I think!) of May 1807
Age at death not recorded or so feint it's illegible
Butcher - William, widower age 73 years, on 27 May 1814
Marriage:
The IGI has this marriage record (a submitted record, not controlled extraction):
William Butcher and Martha Boast
Married 10 October 1768 at Weybread, Suffolk