Background
He was the son of Robert Alexander Dalzell, 6th Earl of Carnwath and Andulusia Browne. He married Isabella Campbell, daughter of Reverend Alexander Campbell, on 16 November 1827.
He was the son of Robert Alexander Dalzell, 6th Earl of Carnwath and Andulusia Browne. He married Isabella Campbell, daughter of Reverend Alexander Campbell, on 16 November 1827.
They had the following children together:
Eleanor Carnwath Dalzell (died 29 May 1867)
Arthur John Dalzell (8 April 1829 – 9 April 1849)
Captain Robert Augustus Dalzell (13 October 1838 − 20 April 1869)
Lady Edith Isabella Dalzell (born 1843, died 7 May 1879)
He was commissioned in 1820, in the service of the Bengal Artillery and gained the rank of Colonel in 1835. He was Commisary of Ordnance between 1835 and 1842 at Agra, India. Lord Carnwath died on 1 November 1887 aged 82, in London without surviving issue.