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 |
|---|---|---|
| Fethircarne | 1 | 1488 (chawmer-) |
| Fettercairne | 1 | 1568 (copy) |