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 |
|---|---|---|
| Galbraith | 4 | 1511 (curatory); 1587 (commissionar); 1589 (catour); 1590-1 (avenary) |
| Galbraithe | 1 | 1588 (avenariman) |