[3] His father was the eldest son of George Sutherland-Leveson-Gower, 2nd Duke of Sutherland and the former Lady Harriett Howard (the third daughter of George Howard, 6th Earl of Carlisle and Lady Georgiana Cavendish, eldest daughter of William Cavendish, 5th Duke of Devonshire).

[3] His mother was the only daughter of John Hay-Mackenzie of Newhall and Cromarty (the younger brother of George Hay, 7th Marquess of Tweeddale) and the former Anne Craig (the third daughter of Sir James Gibson-Craig, 1st Baronet).

[2] She was the great-great-granddaughter of George Mackenzie, 3rd Earl of Cromartie who took part in the Jacobite rising of 1745 and was attainted in 1746).

[2] Upon the death of his mother on 25 November 1888, he succeeded to the titles of 2nd Baron Castlehaven, of Castlehaven, 2nd Viscount Tarbat, of Tarbat, 2nd Baron Macleod of Castle Leod, and 2nd Earl of Cromartie on 25 November 1888.

Lillian Janet Bosville-Macdonald, the third surviving daughter of Godfrey Bosville-Macdonald, 4th Baron Macdonald and the former Maria Anne Wyndham (daughter and co-heiress of George Thomas Wyndham of Cromer Hall, Norfolk).