Barr was born about 1899, the son of unknown parents. The place is not known.
His wife was Janet Johnstone Caird. They were married, but the date and place have not been found. Their three known children were Matthew (1918-?), William (c1922-?) and Annie Caird (1926-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1899 |