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 |
|---|---|---|
| Fentoun | 4 | 1509 (deces); 1510 (chalmerlane, chantour); 1588 (comptroller) |
| of Fentoun | 1 | c1400 (cunning) |