Dictionary of Welsh Biography

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JEFFREYS , JOHN GWYN ( 1809 - 1885 ), conchologist ;

b. 18 Jan. 1809 at Swansea , of a long line of solicitors , and educated at Swansea grammar school . He was himself a solicitor , but from boyhood had been attracted to conchology , and at 19 had had a paper on molluscs published by the Linnean Society . As he had a good partner in his firm, he was enabled to devote more and more time to his researches, and to purchase a yacht for dredging. He removed to London in 1856 and was called to the Bar , but in 1866 totally abandoned the law. Meantime, he had begun to produce a standard work on British shells; the first volume appeared in 1862 , and the fifth and last in 1869 . Afterwards, he began dredging at depths hitherto deemed unapproachable, and in this way greatly enlarged our knowledge of conchology ( 1869 , 1870 , 1880 ). He d. suddenly, 24 Jan. 1885 , in London . He had been elected F.R.S. in 1840 , and was honorary LL.D. of S. Andrews .


  • T. Iorwerth Jones in The Transactions of the Honourable Society of Cymmrodorion , 1932-3 , with a list of 108 of his papers.


Emeritus Professor Robert Thomas Jenkins, C.B.E., D.Litt., Ll.D., F.S.A., (1881-1969), Bangor

Published date: 1959