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 |
|---|---|---|
| Buchannan | 3 | 1618 (chape); 1640 (calland, cordonar) |
| of Buchanane | 2 | 1473-4 (conquest); 1474 (annexatioun) |
| Buchannane | 1 | 1643 (collig) |