The following information is taken from the Dictionary of the Older Scots Tongue, available online at http://www.dsl.ac.uk/index.html. This is a work in progress.
| Spelling | Number | Dates & headers |
|---|---|---|
| Broustar | 2 | 1381 (browstar); 1430 (browstar) |
| broustare | 1 | 1460 (browstar) |
| dictus Brouster [1] | 1 | 1377-84 (browstar) |
[1] This spelling was found in a Latin-language document.