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 |
|---|---|---|
| Dekyson | 3 | 1456 (borow male, cum); 1458 (auditour) |
| Dekysoun | 3 | 1462 (borow, caldron); 1488 (crowner) |
| Dikesone | 3 | 1555 (ale-, colrach); 1571 (burrowage) |
| Diksoun | 3 | 1574 (bute, cordinar); 1586 (clenger) |
| Dykson | 2 | 1545 (bailȝe, counsail) |
| Dekson | 1 | 1457 (assigna) |
| Dickson | 1 | 1609 (cognat) |
| Dicksoun | 1 | 1629 (bleckster) |
| Dicysoun | 1 | 1460 (brek) |
| Dikeson | 1 | 1488 (bern) |
| Diksone | 1 | 1511 (deburs) |
| Diksoune | 1 | 1524 (auctenty) |