| Authorised form of name | Long; Walter Hume (1854 - 1924); 1st Viscount Long of Wraxall | 
| Dates | 1854 - 1924 | 
| Place of birth | Bath, Somerset, England | 
| Date of birth | 13 July 1854 | 
| Place of death | Rood Ashton, Wiltshire | 
| Date of death | 26/09/1924 | 
| Activity | Education: Harrow School
 Honours:
 Viscount 1921
 
 | 
| Membership category | Fellow | 
| Date of election | 19/06/1902 | 
| Source | Sources: Bulloch's Roll; DNB
 References:
 Vanity Fair 16 October 1886
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| Code | NA871 | 
Archives associated with this Fellow
| RefNo | Title | Date | 
| EC/1902/19 | Long, Walter Hume, 1st Viscount Long of Wraxall: certificate of election to the Royal Society |  | 
| IM/002796 | Long, Walter Hume | nd | 
| NLB/24/710 | Copy letter from Robert William Frederick Harrison, to The Right Honorable Walter Hume Long, Fellow of the Royal Society | 24 June 1902 | 
| NLB/34/683 | Copy letter from Robert William Frederick Harrison, to The Right Honorable Walter Hume Long, Fellow of the Royal Society, 51 Cadogan Gardens, S.W. | 25 February 1907 | 
| NLB/59/448 | Copy letter from [William Bate Hardy,] Secretary of the Royal Society; to the Right Honourable [Walter Hume] Long, FRS | 2 October 1920 | 
| CD/50/15 | Copy letter from [William Bate Hardy, Secretary of the Royal Society], to the Right Honourable [Walter Hume] Long, Colonial Office, Downing Street, S.W.1. | 27 November 1918 | 
| NLB/56/338 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Henry Balfour Esquire, FRS | 15 January 1919 | 
| NLB/56/341 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to the Right Honourable Lord Milner | 16 January 1919 |