In 1851 Mary Jane Trevarthen, aged 12, born in Illogan Cornwall, was with her parents and paternal grandparents in Tehidy East Lodge, Illogan.
In 1871 Mary Jane Vivian, aged 32, born in Illogan, and husband Nicholas Vivian, aged 32, born in Illogan, tin miner, were living in Illogan. With them were children (born in Illogan) Andrew (5), Mary Jane (2) and Fred Wm (1).
In 1881 Mary Jane Vivian, aged 42, born in Illogan, and husband Nicholas Vivian, aged 42, born in Illogan, lead miner, were living in Nancekuke, Illogan. Present were children Andrew (15), lead miner, Mary Jane (12), schooler, Albert Marshall (7) of St. Neot, and Annie (1) of Camborne.
In 1891 Mary J. Vivian, aged 52, born in Illogan, and husband Nicholas Vivian, aged 52, born in Illogan, tin miner, were living at Town Hill, St. Agnes, Cornwall. With them were children Andrew (25) of Illogan, tin miner, Mary J. (22) of Illogan, domestic, Albert M. (17) of St. Neot, blacksmith, Annie (11) of Camborne, scholar, and Edith (9) of Illugan, scholar.
In 1901 Mary J. Vivian, aged 62, born in Illogan, and husband Nicholas Vivian, aged 62, born in Illogan, retired tin miner, were living at Town Hill, St. Agnes, Cornwall. With them were daughters Mary J. (31) and Edith (19), assistant schoolmistress.
In 1911 Mary Jane Vivian, aged 62, born in Illogan (mother of 11 children, 6 deceased), and husband of 46 years Nicholas Vivian, aged 72, born in Illogan, retired mine agent, were living in Prospect Terrace, St. Agnes. With them were daughters (single) Mary Jane (41) and Annie (31).
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Mary Jane Vivian of St. Agnes died aged 73 years (burial record).
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VIVIAN.—July 26, at Prospect House, St. Agnes, Mary Jane Vivian, widow of the late Captain Nicholas Vivian, 73.
The Cornishman, Thursday, 1 Aug 1912, p. 4