He married, firstly, Mary Agnew, daughter of Major James Agnew of the 7th
Dragoon Guards, and niece of Sir Andrew Agnew of Lochnaw, Wigtownshire, bart. They had four children: • Robert Dundas, who died on 5 August 1816, • John, captain in the 28th regiment of foot, who died on 2 February 1837, • Mary, who married in 1777
Sir William Honyman, Lord Armadale, • Catherine, who married John Macdonald, chief of Clanranald, in 1786. Lord Braxfield married secondly, Elizabeth Ord, daughter of
Robert Ord,
Lord Chief Baron of the Exchequer for Scotland. They had no further children. == Influence ==