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 |
|---|---|---|
| Bartoune | 2 | 1530 (butis-man); 1629 (ded-) |
| Bartane | 1 | 1516 (coft) |
| Bartone | 1 | 1529 (clerely) |
| Berton | 1 | 1507-8 (culverin) |
| Bertoun | 1 | 1522 (comptrollar) |
| of Bertoun | 1 | 1531 (condition) |