At the time of the 1871, 1881 and 1891 UK censuses, John Vivian worked as a medical practitioner and lived with his brother Banfield in Townshend, Crowan, Cornwall.
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John Vivian of Townshend died aged 55 years (burial record).
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SUDDEN DEATH AT TOWNSHEND.—On Saturday morning Dr. John Vivian, of Townshend, was found dead at his residence. Deceased was very popular among the working classes, by whom he will be greatly missed. He was most patient and genial, and professionally very painstaking. A large circle of friends will much miss him.
The Cornishman, Thursday, 29 Nov 1894, p. 4