Found him!
Thomas Joseph Purvis - c 27 Jan 1822 Alnwick (St Michael's), son of Thomas, flax dresser,
& Margaret, of Pottergate
Many thanks to JenB for pointing me to this resource (Bishop's transcripts at familysearch)!
His parents are still a bit of a problem, though: what I've got from Alnwick etc BTs so far is
given below
Best wishes - and thanks again
Denis
------------------------------
Other refs to Thomas Purvis, flax dresser, give 4 possible other
children (and I haven't looked beyond 1825 yet); but raise problems
over his marriage(s).
Phillis Purvis - b 27 Jul 1811, c 15 Mar 1812 Alnwick
- 2nd dau. of Thomas Purvis, Flax Dresser, native of the parish of Warkworth,
by his wife Ann Egdell (1) native of the parish of Wittingham.
Margaret Purvis - c 25 Sep 1814 Alnwick, dau. of Thomas P, flax dresser,
& Margaret, of Narrowgate
- d 1821 - bd 6 Apr 1821, aged 7 (2) (of Pottergate)
Cecily Purvis (3) - c 28 Dec 1817, dau. of Thomas P, flax dresser,
& Margaret, of Pottergate
Thomas Joseph Purvis - c 27 Jan 1822 (2), son of Thomas P, flax dresser,
& Margaret, of Pottergate
Mary Purvis - bd 30 Nov 1824, aged 16, of Pottergate (4)
NOTES
(1) We know (from c1851) that Margaret came from Glanton in Whittingham
parish, so could Ann be the same as Margaret?
[Have looked unsuccessfully for burial of Ann and/or marriage of
Margaret to Thomas P. in Alnwick / Warkworth / Wittingham 1811-14]
Haven't yet found any other refs. to Phillis - there's a different
Phillis Purvis, c 1811 Berwick, who is in c1861, and d 1867 Newcastle.
(2) Margaret's age at death implies that she was christened at age
5-18 mos. (compare TJP, b 1820/21 acc. censuses, but c Jan 1822.
(3) = Cecilia Purvis, m George Wilson Hedley 1845, 2 children.
(4) Parents not given, but Mary could be Thomas P's oldest daughter,
whose existence is implied by the entry for Phyllis ("2nd dau."); her age
at death would put Mary's birth in 1807/08 which fits well.