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 |
|---|---|---|
| Perdoven | 2 | 1532 (agreance); 1541 (chekker) |
| Perdowin | 1 | 1531 (almous-hous) |