Thanks Crida - this may well help solve the problem.
1841 Census - Towednack
Amalveor,1,John Curnow,35,,Tin Miner,In county,
,,Peggy Curnow,,30,,In county,
,,Phillis Curnow,,12,,In county,
,,Peggy Curnow,,5,,In county,
,,Ann Curnow,,3,,In county,
,,John Curnow,5m,,,In county,
This family is still at Amalveor in 1851 and John is aged 46.
Phillis is not enumerated with the family but there are three other children - Sampson (7), William (5) and Sarah (3).
All members of the family were born at Towednack except John's wife Peggy who was born at St Just.
Working from the 1841 Census.
Daughter Phillis would have been born about 1828 but there appears to be no baptism for her at Towednack and none appearing in the IGI.
However, there is a gap of seven years between Phillis and the next child, Peggy, who was born about 1835/6 and this suggests to me the possibility of multiple marriages being involved.
Here is a list of children baptised to John and Peggy at Towednack up until 1840.
Samson bp. 26th April 1835
Peggy bp. 26th February 1837
Anne bp. 23rd January 1839
Samson appears to have died prior to the 1841 Census and was replaced afterwards by the child appearing in 1851.
This baptism (1835) is the earliest I can find for a child of John and Peggy and occurs about three years after the burial of the Phillis who is the subject of this thread.
As mentioned in a previous post there was an Anne baptised to John and Phillis Curnow 20th March 1832 with she being the only child found to that couple.
I would suggest that Anne also died prior to 1841.
I would also suggest that the 12-year-old Phillis in 1841 was also the daughter of John and Phillis. (But where was she baptised?)
This means that Peggy was probably John Curnow's second wife.
In all events here John was a miner and in both 1841 and 1851 he was at Amalveor.
Have just found something in my database that throws a spanner in the works.
I was about to comment on the fact that John named two sons Sampson.
Checked for Sampson Curnows and found that Sampson and Alice Curnow (m. 1799 Zennor) had a son named John baptised at Towednack 12th August 1804.
Of course I got all excited until I found that this John had been married twice:-
John m. Elizabeth CHAPEL at Gulval 14th May 1825
John m. Peggy Bennets NANKERVIS at Towednack 19th October 1833
And there is the spanner!
However - No burial has been found for Elizabeth which is most interesting.
FOOD FOR THOUGHT.
Elizabeth was daughter of Peter and PHILLIS Chapple and was baptised at Madron 30th November 1806.
The PHILLIS in the 1841 Census with John and Peggy is now most likely to be Phillis Chapel Curnow who was baptised at Towednack 13th March 1830 d/o John and Elizabeth.
Let's look at the possibility that, for some reason, either an error has occurred in the Parish Register or that Elizabeth somehow suddenly became known as Phillis.
If we work on a time-line then all the data (apart from the name Phillis) fits neatly.
My suggestion now is that the burial of Phillis Curnow at Towednack in 1832 is actually that of the elusive Elizabeth (nee Chaple) and that Anne bp. 1832 was her child.
Given all evidence to hand, including Census records, I doubt we will find another Phillis who was married to a John Curnow in the relevant time-frame.
I would be almost willing to bet that this is the solution.