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 |
|---|---|---|
| Watt | 4 | 1509 (cloke); 1601-2 (brig-penny, bygane); 1605 (athort) |