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 |
|---|---|---|
| Cowane | 3 | 1529 (borch); 1571 (clath); 1588 (commissionar) |
| Kowane | 1 | 1622 (bounteth) |