In 1861 Mary Dunkin Vivian, aged 39, born in Crowan Cornwall, unmarried, was with her widowed father in Camborne Veor, Camborne, Cornwall.
In August 1867 Mary D. Vivian was present at the marriage of her sister Eleanor Ball Williams Vivian to Henry Vivian Newton in Camborne.
In 1881 Mary D. Vivian, aged 59, born in Camborne, unmarried, houses & interest of money, was boarding with Clara L. B. Forsaith, widow, at 23 Basset St., Camborne.
In 1891 Mary D. Vivian, aged 66 [sic], born in Crowan, single, living on own means, was boarding in Porthleven, Sithney, Cornwall.
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Mary Duncan Vivian of Porthleven died aged 71 years (burial record).
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Mary Duncan Vivian of Porthleven Sithney Cornwall, spinster, died 29 July 1893. Probate London 24 August to Eleanor Newton* (wife of Henry Vivian Newton). Effects £2,331 9s. 8d. 2
* sister