David Carnegie, 10th Earl of Northesk

Lord Northesk served as aide-de-camp to the Governor of Victoria from 1889 to 1891 and again from 1895 to 1895. He also served as a Conservative Representative Peer for Scotland from 5 October 1900 until his death on 5 December 1921.^[1]

He married Elizabeth Boyle Hallowes, eldest daughter of Maj.-Gen. George Skene Hallowes, on 3 February 1894 and had two children:

• David Ludovic George Hopetoun Carnegie, 11th Earl of Northesk (1901–1963),^[2] who married Jessica Ruth (née Brown) Reinhard, a former Ziegfeld Follies dancer, in Chicago in 1923.^[3][4] They divorced in 1928 and he married Elizabeth "Betty" Vlasto, a daughter of Anthony Augustus Vlasto of Binfield Park and a cousin of the well-known tennis player Julie Vlasto, in 1929.^[5][6]
• Katharine Jane Elizabeth Carnegie (1904–1949),^[7] who married Lt.-Col. William Bridgeman Lambert Manley. After their divorce, she married Brig. Edward Leathley Armitage.^[1]

Lord Northesk died on 5 December 1921 at age 56 and was succeeded in the earldom by his only son, David. As his son died without male issue in 1963,^[2] the earldom passed to the 10th Earl's nephew, John Douglas Carnegie.^[1]