In 1881 Cordelia Trevillion (25) of Camborne, domestic, was with her widowed mother in Reskadinnick, Camborne, Cornwall.
In 1891 Cordelia Trethowan (36) of Camborne and husband William Trethowan (32) of Camborne, mason/builder, were living in 18 Wellington Rd., Camborne. Present was daughter Jessie (1) of Camborne.
In 1911 Cordelia Trethowan (57) of Camborne (mother of 2 children, 1 deceased) and husband William Trethowan (52) of Camborne, house builder, were living in Wellington Rd., Camborne. Present were daughter Jessie (21), single, domestic, mother Grace Trevillion (90), widow, brother John Trevillion (51), single, tin miner.
In Jun 1922 Cordelia Trethowan, widow, was granted Administration of her late husband's personal effects.
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Cordelia Trethowan died aged 84 years. 3
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TRETHOWAN.—Dec. 9, at 35, Wellington-road, Camborne, Cordelia, widow of William Trethowan, aged 85.
The Cornish Post, Saturday, 18 Dec 1937, p. 4
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MRS. C. TRETHOWAN, OF CAMBORNE.
The funeral took place at Camborne on Monday of Mrs. Cordelia Trethowan, of Wellington-road, Camborne, whose death occurred last week at the age of 85.
Mrs. Trethowan, who was the widow of Mr. William Trethowan, a Wesleyan local preacher for many years, was one of the oldest members of Camborne Wesley Society. She leaves one daughter, Mrs. W. J. Cock, with whom she resided.
The first part of the service was held in Wesley Chapel and the interment was in the churchyard. The Rev. F. Inwood officiated, and the mourners were Messrs. W. E. and A. F. Cock (grandsons), W. J. Cock (son-in-law), A. and W. A. Pascoe (nephews), N. Trethowan (brother-in-law), H. and W. Glanville, A. Trevillion, W. Mounts, J. Jenkin, J. H. Trerise and G. Southwood (cousins)....
The Cornish Post, Friday, 24 Dec 1937, p. 8