www.familysearch.org has this submitted entry which is an indication that somebody else is researching the same family
William Dunstan Christening: 30 SEP 1810 Wendron Cornwall,
Spouse: Mary Roberts Marriage: 08 DEC 1831 Wendron, Cornwall
This is an extracted IGI entry so is taken from the original entry
WILLIAM DUNSTONE Christening: 30 SEP 1810 Wendron, Cornwall Father: THOMAS DUNSTONE Mother: SUSANNA
1841 census for Wendron - ages from 16yrs were rounded down to the nearest 5yrs in 1841
William Dunstan 35 copper miner
Mary 30
Mary 8
William 5
Grace 3
HO107 Piece 139/6 Folio 22 Page 7