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 |
|---|---|---|
| Bruce | 6 | 1574 (credibill); 1603 (corn); 1604 (cunterfitting, curatrix); 1609 (col-heuch) |
| the Brois | 1 | 1490 (courtasy) |
| the Bruse | 1 | 1496 (compell) |
| Bruys | 1 | 1456 (conditioun) |