Donald Robertson (British administrator) explained

Lieutenant-Colonel Sir Donald Robertson, KCSI (24 June 1847 – 13 October 1930) was a British military officer and member of the Indian Political Service. He was Resident of Mysore from 1896 to 1903.^{[1] [2]}

His only son was Major-General Donald Elphinston Robertson, CB, DSO (1879–1953).

References

1. News: 14 October 1930 . Sir Donald Robertson . 16 . The Times.
2. News: 14 October 1930 . Lt. -Col. Sir Donald Robertson . 13 . The Daily Telegraph.