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 |
|---|---|---|
| Perth | 20 | 1362 (castel); 1385 (barony); 1402 (bouk, brig, burrowis, debate); 1425 (continue); 1468 (cessioun); 1496 (burges man, burrowis); 1497 (bridil-); 1503 (bond); 1548 (crave); 1550 (brunt); 1564 (comburges); 1581-2 (bringar); 1582 (coronelschip); 1587 (commissionar); 1597-8 (brabanar); 1615 (cake) |
| Perthe | 3 | 1471 (craftisman); 1594-5 (cost-); 1596 (brouch) |
| Pertht | 2 | 1513-4 (bellman); 1565-6 (crounar) |
| Pert | 1 | 1468 (cessioun) |