Robert Dundas of Arniston, the younger

Lord Arniston
Portrait of Dundas by Henry Raeburn
Lord President of the Court of Session
Lord Justice General
In office
30 April 1760 – 13 December 1787
Appointed byGeorge III
Preceded byRobert Craigie
Succeeded byThomas Miller
Member of Parliament for Midlothian
In office
17541761
Preceded byRobert Balfour-Ramsay
Succeeded bySir Alexander Gilmour
Lord Advocate
In office
1754–1760
Preceded byWilliam Grant
Succeeded byThomas Miller
Solicitor General for Scotland
In office
1742–1746
Preceded byWilliam Grant
Succeeded byPatrick Haldane
Personal details
Born18 July 1713 (1713-07-18)
Died13 December 1787 (1787-12-14) (aged 74)
Adam's Square, Edinburgh
Resting placeBorthwick
Political partyWhig
Spouses
Henrietta Baillie
(m. 1741; died 1755)
Jean Grant
(m. 1756)
Children8, including Robert, Francis, William, Philip
Parent(s)Robert Dundas of Arniston
Elizabeth Watson
Alma materUniversity of Edinburgh
Utrecht University
ProfessionAdvocate, Judge, Politician
Arniston Aisle, Borthwick Parish Church

Robert Dundas of Arniston, the younger, FRSE (18 July 1713 – 13 December 1787) was a Scottish judge. He served as Solicitor General for Scotland from 1742 to 1746, as Lord Advocate from 1754 to 1760, and as Member of Parliament for Midlothian from 1754 to 1761. He was Lord President of the Court of Session from 1760 to 1787, losing his popularity for giving his casting vote against Archibald Douglas in the famous Douglas Cause.