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 |
|---|---|---|
| Sutherland | 3 | 1515 (chapel); 1516 (comptes); 1596 (cruke) |
| Suthirland | 2 | 1527 (cheplanry); 1589 (corfhous) |
| Suderland | 1 | 1579 (comptes) |
| Sudderland | 1 | 1608 (dale) |
| Suthurland | 1 | 1580 (conquessar) |