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 |
|---|---|---|
| Moresoun | 2 | 1585 (cokkil); 1600 (commoner) |
| Moresone | 1 | 1645 (capitane) |
| Morison | 1 | 1558 (dams) |
| Morrison | 1 | 1542 (birsyn) |
| Murisone | 1 | 1617 (chow) |