Donaldson was born about 1888, the son of unknown parents. The place is not known.
His wife was Margaret GARDNER Fraser Caird. They were married, but the date and place have not been found. Their five known children were Annie Caird (1914-1996), John (1906-?), William Fraser Caird (1907-?), Alexander MacKinnon (c1912-?) and Helen MacKinnon (1919-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1888 |