In 1861 Mary Trezona, aged 30, born in Camborne Cornwall, miner's wife, and husband Hannibal Trezona, aged 30, born in Camborne, miner, were living in Parkin Bowen, Camborne. Present were children (born in Camborne): Mary J. (6), scholar, James (4), scholar, William (3), scholar, Richard (1).
In 1871 Mary Trezona, aged 40, born in Camborne, miner's wife, and husband Hannibal Trezona, aged 37, born in Camborne, miner, were living in North Parade, Camborne. With them were children (born in Camborne): Mary J. (15), mine girl, William (12), tin miner, Richard (10), tin miner, Elizabeth (6), scholar, James (4), scholar, Edith (3), Thomas (8m).
In 1881 Mary Trezona, aged 50, born in Camborne, and husband Hannibal Trezona, aged 47, born in Camborne, tin miner, were living at 22 Wesley St., Camborne. Present were children (born in Camborne): Richard (20), tin miner, Elizabeth (16), mine girl, James (14), tin miner, Edith (12), mine girl, Thomas (10), scholar, John (8), scholar.
In 1891 Mary Tresonna, aged 60, born in Camborne, widow, was living at 22 Wesley St., Camborne. Present were children (born in Camborne): Bessie (24), servant, James (23), tin miner (em'ee), Thomas (20), miner (em'ee), John (18), shoemaker (em'ee).
In 1901 Mary Trezona, aged 70, born in Camborne, was living in 30 Centenary Street, Camborne. With her were children (born in Camborne): John Trezona (27), boot and shoe maker, Elizabeth Balchin (35), married.
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Mary Trezona of 30 Centenary Street died aged 77 years (burial record).