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 |
|---|---|---|
| Fasyntoun | 2 | 1516 (adjunct, commissar) |
| Fassintoun | 1 | 1523-4 (cistern) |