John JAMES died 13 Jun 1863 aged 69 years (TasRef# 3943) and so would have been born ~1794.
He married Martha HALEY 11 Sep 1820 (TasRef#399) and his reported age was 27 (which places his date of birth ~1793).
James and Martha had seven children from 1821 to 1833, the youngest child Julia/Juliana James, dying on 1 May 1834 (1 year old) and buried at Queenborough Cemetery.
The records do not indicate where James came from. Given the large number of John JAMES baptisms listed in the IGI database around 1793, unless there is some ship/passenger list that provides further information it is unlikely that his ancestry can be traced further.