| Authorised form of name | Holwell; John Zephaniah (1711 - 1798) |
| Dates | 1711 - 1798 |
| Place of birth | Dublin, Ireland |
| Date of birth | 17 September 1711 |
| Place of death | Pinner, Middlesex |
| Date of death | 05 November 1798 |
| Occupation | Surgeon |
| Membership category | Fellow |
| Date of election | 29/01/1767 |
| Source | Sources:
Bulloch's Roll; DNB |
| Code | NA3871 |
Archives associated with this Fellow
| RefNo | Title | Date |
| EC/1766/17 | Holwell, John Zephaniah: certificate of election to the Royal Society | |
| IM/002194 | Holwell, John Zephamiah | nd |
| L&P/5/292 | Letter, 'An account of a new and singular species of oak' from John Zephaniah Holwell | 24 February 1772 |