| Full name: | John Stewart Napier |
| Born: | 2nd August 1871 |
| Died: | 1951 |
| Education: | Loretto School |
| Occupation: | Car Designer and Manufacturer, Humber Car Company |
| Other Sports: | Rugby |
| Biography: | Won the Isle of Man TT Race in 1905 with his own-designed car at an average speed of 38 mph, which beat the previous record by 12 mph. |
| Teams: | Loretto School (Miscellaneous: 1890-1891) |
| Lists of matches and more detailed statistics | |