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 |
|---|---|---|
| Peter | 8 | 1496 (brokar); 1542 (calmis); 1551-2 (crounar); 1561 (brigancy, chirurgenair); 1569 (court clerk); 1595 (almosar); 1599 (dagmaker); 1628 (almosar) |
| Petir | 6 | 1561 (cullour-du-roy); 1565 (apperand); 1567 (agateward); 1584 (calf); 1600 (almosar); 1606 (citiner) |
| Peiter | 1 | 1588-9 (clarsho-) |
| Petre | 1 | 1588 (cummer) |