t]
| 1. | John (Giovanni Caboto ), c1450–98?, Italian navigator in the service of England: discoverer of North American mainland 1497. |
| 2. | Richard Clarke, 1868–1939, U.S. physician and writer on medical ethics. |
| 3. | Sebastian, 1474?–1557, English navigator and explorer (son of John Cabot). |
| 4. | a male given name. |