John Arbuthnott, 6th Viscount of Arbuthnott (1703-1791) (1703–1791) Parents Margaret Falconer John Arbuthnott Children Margaret Arbuthnott Robert Arbuthnott John Arbuthnott, 7th Viscount of Arbuthnott Siblings James Arbuthnott Mary Arbuthnott Partners Mary Douglas Jean Arbuthnott