Lieutenant-General Robert Alexander Dalzell, 6th Earl of Carnwath (13 February 1768 – 1 January 1839), was a Scottish nobleman and soldier.
[1] Carnwath was the son of Robert Dalzell (1738−1788) (himself the son of Robert Dalzell, 5th Earl of Carnwath) and Elizabeth Acklom.
They had the following children together: Carnwath married finally, Jane Morrison née Carnell, daughter of John Carnell, on 11 October 1838.
The titles of Earl of Carnwath, Lord Dalzell and Liberton and the Dalzell baronetcy of Glenae had been forfeited by a Writ of Attainder for treason for the fifth Earl's support of the Jacobite cause in an unsuccessful rebellion in 1715 known as the Fifteen or Lord Mar's Revolt.
[3] Carnwath died on 1 January 1839 aged 70, and was succeeded in his titles by his son, Thomas Dalzell.