Donaldson was the third son of Sir Stuart Alexander Donaldson and his wife Amelia née Cowper and was born in London.
Lou Donaldson | St. Clair County, Illinois | René Clair | Frankie and Johnny in the Clair de Lune | Arthur St. Clair | Stuart Alexander Donaldson | St. Clair County | St. Clair Avenue | Julia Donaldson | Glenn Donaldson | St. Clair County, Michigan | St. Clair | Sam Donaldson | Gordon Donaldson | Walter Donaldson | Stuart Donaldson | St. Clair River | Donaldson, Lufkin & Jenrette | Donaldson | Clair de Lune | William Donaldson | St. Clair's Defeat | St. Clair McKelway | St Clair Donaldson | St. Clair County, Alabama | St Clair | Roger Donaldson | Richard St. Clair | Pat Donaldson | Matthew St. Clair Clarke |
The eldest son Stuart Alexander Donaldson, a distinguished scholar, became Master of Magdalene College, Cambridge, Vice-chancellor of the University of Cambridge in 1912 and died in 1915; another son was St Clair Donaldson – archbishop of Brisbane.