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 |
|---|---|---|
| Mowat | 6 | 1553 (bailȝe, burch); 1602 (cationar); 1628 (chaudmellé); 1641 (convene); c1641 (deces) |
| Mouat | 1 | 1458 (arscap) |