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 |
|---|---|---|
| Ruthven | 4 | 1497 (convoy); 1546 (condit); 1552 (coronell); 1600 (blude) |
| Rothuen | 1 | 1493 (clous) |