Angus Alexander Mackintosh (Younger of Mackintosh) was born on 6 August 1885, the son of Alfred Donald Mackintosh of Mackintosh, 28th Chief of the Clan Chattan and Harriet Diana Arabella Mary Richards.

He married Lady Maud Louisa Emma Cavendish, daughter of Victor Christian William Cavendish, 9th Duke of Devonshire and Lady Evelyn Emily Mary FitzMaurice, on 3 November 1917, at Ottawa, Canada.  They had a daughter, Anne Peace Arabella Mackintosh, 30th Chief of Clan Chattan, daughter of Angus Alexander Mackintosh of Mackintosh and Lady Maud Louisa Emma Cavendish. Born 24 September 1918 Cartierville, Montreal.

 He served as Captain, Royal Horse Guards and died in Washington, D.C. on 13 October 1918.  As World War I was in progress, he was buried with full military honors in Arlington National Cemetery.

MACKINTOSH, ANGUS
CAPT ROYAL HORSE GUARD BRITISH ARMY
VETERAN SERVICE DATES: Unknown
DATE OF DEATH: 10/13/1918
DATE OF INTERMENT: Unknown
BURIED AT: SECTION S  SITE 4140
ARLINGTON NATIONAL CEMETERY