David Donaldson was the son of Alexander Donaldson and Catherine Pirie. He was the informant for, and present at, Catherine Pirie's death at 37 Church Street, Portknockie, Banffshire, Scotland, on 19 March 1940.1
- [S3004] Catherine Donaldson née Pirie, Register of Deaths in the District of Seafield in the County of Banff, "Catherine Donaldson, (Widow of Alexander Donaldson, Fisherman), died 1940, March Nineteenth 4h 30m A.M. at 37, Church Street, Portknockie, Female, 73 years. Father: David Pirie, Fisherman (Deceased), Mother: Ann Pirie M.S. Mair (Deceased). Cause of death: Broncho-Pneumonia, as cert. by:- E.M.M. Simpson M.B. C.h.B. Informant: David Donaldson, Son (Present). Registered: 1940, March 19th at Portknockie, William Falconer, Registrar."