Hi,
1841 census
Civil Parish of St. Austell
Book 2 Folio 4 Page 1
Polkyth,1,
William Barry,40, Tin Miner, In county
Margaret Barry,45, In county,
William Barry,15, In county,
Richard Barry,13, In county,
John Barry,10, In county,
Mary Ann Barry,9, In county,
Thomas Barry,3, In county
James Barry,23, Tin Miner,In county,
Then on the IGI - (extracted record)
MARGERETT TIPPITT baptised 30 JUN 1791
Saint Agnes Near Truro, Cornwall, England
Parents - Thomas TIPPITT and Joanna
which allowing for the rounding down of ages in the 1841 is in the right ballpark (not sure about geographically - I don't know that part of Cornwall too well

also on IGI (but submitted by an LDS member- i.e. unverified)
Thomas Teppit - Marriage to Joanna MATTHEWS
19 JAN 1788 Of St Agnes, , Cornwall, England