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 |
|---|---|---|
| Clerk | 5 | 1503 (alias); 1563 (chirurgianrie); 1582 (brother); 1597 (busk); 1610 (clething) |
| Clark | 3 | 1522 (bruch); 1614 (dede-); 1621 (beme) |
| Clerc | 1 | 1360 (clerk) |