The following information is taken from the Dictionary of the Older Scottish Tongue, available online at http://www.dsl.ac.uk/index.html. This is a work in progress.
| Spelling | Number | Dates & headers |
|---|---|---|
| Turnbule | 4 | 1517 (baner, brother); 1561 (chirurgenair) |
| Trumble | 2 | 1609 (deburs); 1622 (boitkin) |
| Trumbull | 1 | 1498 (componitor) |