If you are still looking for Thomas Attewell and his parents ...
Thomas s/o Thomas ATTIWELL & Fanny
born 18 Oct 1807, baptised 5 Nov 1807 at St Nicolas Newbury
I can't see a marriage for Thomas and Fanny, but a Fanny ATTEYWELL (widow) married John HUNT (bach) on 1 Oct 1810. I can't see a burial for Thomas.
I came across this just doing a speculative search for "Herbert", but it caught my eye because Maria Hunt was a grandaughter of my 7xgreat grandfather Stephen Hunt, and I have a DNA match to the Attewells that I am trying to sort out