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Authorised form of nameJeffreys; John Gwyn (1809 - 1885); lawyer and conchologist
Dates1809 - 1885
NationalityBritish
Place of birthSwansea, Glamorgan, Wales
Date of birth18 January 1809
Place of death1 The Terrace, Kensington, London, England
Date of death24 January 1885
Occupationlawyer and conchologist
Research fieldMalacology
Conchology
Marine zoology
ActivityEducation:
Bishop Gore School, Swansea grammar school; Lincoln's Inn.
Career:
Apprentice at a solicitors in Swansea (1826); qualified as a barrister (1838); called to the bar (1856); pursued his passion for conchology and the biology of molluscs; retired from the legal profession (1886); partook in dredging operations in the Irish Sea, the English Channel, seas around Hetland Islands, and the west of Scotland, as well as expeditions in Norway; partook in the Porcupine expeditions (1869-1870); Valorous expedition to Greenland (1875); French Travailleur expedition (1880); moved from London to Aware, Hertfordshire, and bought the Greyfriars Priory which turned into a meeting place for British and foreign artists (1866); Justice of the Peace for Glamorgan, Brecon, and Hertfordshire (1877); died of apoplexy.
Membership categoryFellow
Date of election02/04/1840
Age at election31
ProposerLewis Weston Dillwyn; John Montgomery Traherne; James Ebenezer Bicheno; John Dillwyn Llewelyn; John Henry Vivian; Christopher Rice Mansel Talbot; Henry Thomas de la Beche
RelationshipsParents: John Jeffreys (d. 1815), solicitor, and Martha Tringham.
Spouse: Ann Nevill (d. 1881) of Llangennech Park, Carmarthenshire (21 April 1840).
Son in law: Henry Nottidge Moseley (FRS 1877)
Chidlren: One son and four daughters.
PublishedWorksRCN 46103
OtherInfoKnown for his work on British and Mediterranean Mollusca.
SourceSources:
Bulloch's Roll; DNB; DSB
Obituaries:
Proc Roy Soc 1884-1885 vol 38 pp xiv-xviii signed by W B C
Virtual International Authority Filehttp://viaf.org/viaf/32115498
CodeNA1658
Archives associated with this Fellow
RefNoTitleDate
EC/1840/11Jeffreys, John Gwyn: certificate of election to the Royal Society
IM/Maull/002416Jeffreys, John Gwynnd
RR/7/452Referee's report by Albert Charles Gotthilf Lewis Gunther, on a paper 'Preliminary report of the biological results of a cruise in H. M. S. 'Valorous’ to Davis Strait in 1875' by John Gwyn Jeffreys4 August 1876
RR/7/453Referee's report by Charles Thomas Wyville Thomson, on a paper 'Preliminary report of the biological results of a cruise in H. M. S. 'Valorous’ to Davis Strait in 1875' by John Gwyn Jeffreys10 August 1876
MC/9/479Letter from J [John] Gwyn Jeffreys, 25 Devonshire Place, Portland Place, to Walter White, [Assistant Secretary of the Royal Society]23 January 1873
MC/9/13Letter from J [John] Gwyn Jeffreys, 25 Devonshire Place, Portland Place, to Mr [George] Bentham22 January 1870
MC/10/312Letter from J [John] Gwyn Jeffreys, 33 Grosvenor Street, to Dr [Joseph Dalton] Hooker, [President of the Royal Society]3 December 1875
MC/9/414Letter from Wm H [William Healey] Dall, US Coast Survey, Office of the US Coast Survey, San Francisco, California, to J [John] Gwyn Jeffreys6 October 1872
MC/9/429Letter from J [John] Gwyn Jeffreys, 25 Devonshire Place, Portland Place, to [William Sharpey and George Gabriel Stokes], Secretaries of the Royal Society6 November 1872
MC/9Volume 9 of miscellaneous correspondence regarding business matters, sent to the Royal Society1870-June 1873
MC/10/287Letter from John Gwyn Jeffreys, Ware Priory, Hertfordshire, to [Joseph Dalton Hooker], President of the Royal Society8 October 1875
MC/10Volume 10 of miscellaneous correspondence regarding business matters, sent to the Royal SocietyJuly 1873-1876
MC/11/104Letter from J [John] Gwyn Jeffreys, Ware Priory, Hertfordshire, to the Secretary of the Admiralty6 October 1877
MC/11/131Letter from J [John] Gwyn Jeffreys, Athenaeum Club, Pall Mall, to [Joseph Dalton] Hooker, [President of the Royal Society]7 December 1877
MC/11/127Letter from J [John] Gwyn Jeffreys, Ware Priory, Hertfordshire, to [Joseph Dalton Hooker], President of the Royal Society1 December 1877
AP/37/1Paper, 'Notes on British Foraminifera' by John Gwyn Jeffreys18 June 1855
MC/11Volume 11 of miscellaneous correspondence regarding business matters, sent to the Royal Society1877-1879
MS/257/2/345Letter from John Gwyn Jeffreys, Galway to Edward Sabine7 June 1869
MC/17/353Letter from [Sir Charles Thomas] Wyville Thomson, to [John] Gwyn Jeffreysc. March 1872
RSC/5/2/9Letter from Geo [George] Henry Richards, 38 Old Broad St., to [John Gwyn] Jeffreys 4 July 1879
RSC/5/2/10Letter from Geo [George] Henry Richards, to [John Gwyn] Jeffreys 16 July 1879
RSC/5/2/28Letter from John Tyndall, Royal Institution of Great Britain, to [John] Gwyn Jeffreys31 May 1884
RSC/5/2/6Letter from Erasmus Ommanney, United Services Club, Pall Mall, to [John] Gwyn Jeffreys19 November 1878
RSC/5/2/1Letter from William Thomson, Yacht 'Lalla Rooke', Portsmouth, to Mr [John] Gwyn Jeffreys 3 July 1878
RSC/5/2/7Letter from Lord Salisbury, Foreign Office, to Mr [John] Gwyn Jeffreys21 January 1879
RSC/5/2/3Letter from J W Cooper, War Office, to Mr [John] Gwyn Jeffreys 18 July 1878
RSC/5/2/19Letter from C W [Charles William] Siemens, 3 Palace Houses, Kensington Gardens, to Mr [John] Gwyn Jeffreys8 June 1881
RSC/5/2/14Letter from Lord Salisbury, 20 Arlington St., to Mr [John Gwyn] Jeffreys9 June 1880
RSC/5/2/16Letter from I [Isaac] Lowthian Bell, Aix les Bains, to J [John] Gwyn Jeffreys and G H [George Henry] Richards10 May 1881
RSC/5/2/18Letter from Lord Rayleigh, 5 Salisbury Villas, Cambridge, to Mr [John] Gwyn Jeffreys6 June 1881
RSC/5/2/20Letter from W H [William Henry] Smith, 3 Grosevenor Place, London, to J [John] Gwyn Jeffreys26 June 1881
RSC/5/2/21Letter from I [Isaac] Lowthian Bell, Rounton Grange, Northallerton, to J [John] Gwyn Jeffreys 5 July 1881
RSC/5/2/15Letter from Geo [George] Henry Richards, Telegraph Construction & Maintenance Company Limited, Offices 38 Old Broad St., London, to [John Gwyn] Jeffreys 28 January 1881
RSC/5/2/17Letter from C [Charles] Wyville Thomson, Bonsyde, Linlithgow, to [John] Gwyn Jeffreys 21 May 1881
RSC/5/2/22Letter from W H [William Henry] Smith, House of Commons, to [John Gwyn] Jeffreys22 June 1882
RSC/5/2/23Letter from W H [William Henry] Smith, House of Commons, to Mr [John Gwyn] Jeffreys4 July 1882
RSC/5/2/24Letter from H E [Henry Enfield] Roscoe, The Owens College, Manchester, to J [John] Gwyn Jeffreys28 April 1883
RSC/5/2/26Letter from T H [Thomas Henry] Huxley, 4 Marlborough Place, Abbey Road, to [John] Gwyn Jeffreys18 November 1883
RSC/5/2/25Letter from I [Isaac] Lowthian Bell, Rounton Grange, Northallerton, to J [John] Gwyn Jeffreys and G H [George Henry] Richards4 June 1883
RSC/5/2/27Letter from T H [Thomas Henry] Huxley, 4 Marlborough Place, Abbey Road, to [John] Gwyn Jeffreys9 December 1883
RSC/5/2/29Letter from Geo [George] Busk, 32 Harley Street, to [John Gwyn] Jeffreys4 June 1884
RSC/5/2/30Letter from J J [James Joseph] Sylvester, New College, Oxford, to [John Gwyn Jeffreys]5 June 1884
RSC/5/2/31Letter from Alex W [Alexander William] Williamson, 28 Primrose Hill Road, to Dr [John] Gwyn Jeffreys8 June 1884
RSC/5/2/8Letter from William Thomson, The University, Glasgow, to Dr [John] Gwyn Jeffreys 31 March 1879
RSC/5/2/2Letter from Lord Rosse, Birr Castle, Parsonstown, to 'My dear Sir' [John Gwyn Jeffreys] 4 July 1878
RSC/5/2/13Letter from C [Charles] Wyville Thomson, Bonsyde, Linlithgow, to [John] Gwyn Jeffreys 3 May 1880
RSC/5/2/12Letter from John Percy, House of Commons, to Mr [John] Gwyn Jeffreys 22 February 1880
RSC/5/2Correspondence of Treasurers of the Royal Society Club3 July 1878-27 June 1894
RSC/5/2/5Letter from Erasmus Ommanney, United Services Club, Pall Mall, to [John] Gwyn Jeffreys3 November 1878
PP/3/19Paper, 'Remarks on the soundings and temperatures obtained in the Faeroe [Faroe-Shetland] Channel during the summer of 1882' by T H Tizard1883
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