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 | 
|---|---|---|
| Lam | 3 | 1493 (brek, cum); 1496 (chalmer); 1498 (chaplan) | 
| Lamb | 2 | 1424 (alderman); 1580 (cramery) |