In 1811 Matthew Trewartha was co-executor of his father's will, receiving his estate in Amelbry in Towednack.
  
  
In 1814 Matthew Trewartha was named in the will of his brother-in-law Matthew Trewhella (wife of sister Alice).
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  In 1841 Mathew Trewhella, aged about 60, born in the county, farmer, and wife Martha Trewhella, aged about 60, born in the county, were living in Riviere Farm, Phillack, Cornwall. With them were children: Willm. (30), John (30), Catherine (20), granddaughter Martha Michell (5)
  In 1851 Mathew Trewhella, aged 72, born in Towednack Cornwall, farmer of 100 acres employing 2 men and 1 boy, and wife Martha Trewhella, aged 70, born in St. Ives, were living in Churchtown, Phillack. With them were children (born in Towednack, unmarried): Christopher (39), Margret (27).
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  Matthew Trewhella of Riviere died aged 80 years (burial record).