By 1841 it looks like James Banks has died and Mary has remarried William Humphreys.
Marriages Jun 1839 (>99%)
BANKS Mary Devizes 8 503
HATTER William Devizes 8 503
HUMPHRYS William Devizes 8 503
MATTHEWS Mary Devizes 8 503
1841 census has them as follows:
William Humphrys Male 32 1809 -
Mary Humphrys Female 35 1806 Wiltshire, England
Wm Humphrys Male 1 1840 Wiltshire, England
Richard Banks Male 7 1834 Wiltshire, England
John Banks Male 5 1836 Wiltshire, England
Street Pickwick
Parish or township Corsham
County Wiltshire
Country England
Registration district Chippenham
Archive reference HO107
Piece number 1171
Book number 14
Folio number 16
Page number 2
Bev