In 1841 Grace Trewhella, aged about 35, born in the county, and husband Matthew Trewhella, aged about 45, born in the county, tin miner, were living in Amalebrea, Towednack, Cornwall. With them were children Grace (12), Alice (9), Ann (7), Matthew (4), Johanna (2), [niece] Ann Ninnes (4)
In 1851 Grace Trewhella, aged 49, born in Towednack, and husband Matthew Trewhella, aged 57, born in Towednack, tin miner, were living in Amalebry, Towednack. With them were children (born in Towednack): Alice (19), Ann (17), Matthew (14), Joanna (11), sister Alice Trewhella (52) of Towednack, blind
In 1861 Grace Trewhella, aged 58, born in Towednack, and husband Matthew Trewhella (67) of Towednack, farmer of 12 acres, were living in 9 Amalebry, Towednack. With them were children: Ann (27), dressmaker, Johanna (24), dressmaker, Matthew (22), farmer's son.
In 1871 Grace Trewhella, aged 67, born in Towednack, widow, annuitant, was with her son Matthew and his family in 2 Amalebry, Towednack.
In 1881 Grace Trewhella, aged 78, born in Towednack, widow, housekeeper, was living in Trenowin, Ludgvan. Present was son Matthew (44) of Towednack, widowed, farmer of 30 acres, grandson Matthew Trewhella (11), scholar.
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Grace Trewhella of Ludgvan died aged 83 years (burial record). Age understated by a year or two.