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 |
|---|---|---|
| Nicholson | 1 | 1616 (catechis) |
| Nicholsone | 1 | 1446 (chaplan) |
| Nicolson | 1 | 1500 (aunt) |