| Authorised form of name | Walpole; Horatio (1717 - 1797); 4th Earl of Orford |
| Dates | 1717 - 1797 |
| Nationality | British |
| Place of birth | 17 Arlington Street, London, England |
| Date of birth | 24 September 1717 |
| Place of death | 40 Berkeley Square, London |
| Date of death | 02 March 1797 |
| DatesAndPlaces | Burial: Houghton, Norfolk |
| Activity | Education: Eton; King's College, Cambridge. Career: Chief Usher, Clerk of Estreats and Comptroller of the Pipe (738-1797); MP; art collector; writer Memberships: FSA (1753)
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| Membership category | Fellow |
| Date of election | 19/02/1747 |
| Relationships | Son of Sir Robert Walpole, 1st Earl of Orford; succeeded as 4th Earl (1791); also 3rd Viscount Walpole; unmarried |
| Source | Sources: Bulloch's Roll; DNB |
| Code | NA3826 |
Archives associated with this Fellow
| RefNo | Title | Date |
| CB/1/1/210 | Letter from M[ary] Berry to Charles Blagden | [3 October 1796] |
| CB/2/297 | Copy of a letter from Charles Blagden to Walpole | 3 September 1789 |
| CB/1/1/212 | Letter from Charles Blagden to Miss [Mary] Berry | 3 March 1787 |
| CB/1/1/211 | Letter from M[ary] Berry, North Audley Street to Charles Blagden | [March 1797] |
| L&P/2/299 | Letter, 'Further account of his case (calculus) and of the soap and lime-water treatment' from Horace Walpole to the Royal Society | 1 April 1752 |
| L&P/2/92 | Paper, 'An account of his own case (calculus) drawn up by himself' from Horatio Walpole | 1 April 1750 |