The Hon David Dalrymple, Lord Westhall (1719–1784) was an 18th-century Scottish lawyer who rose to be a Senator of the College of Justice.
He was born on 27 August 1719 the fourth son of Hew Dalrymple, Lord Drummore (1690-1755) and his wife Ann Horne of Westhall near Aberdeen.
His maternal grandfather was Robert Hamilton, Lord Presmennan of East Lothian.
In 1777 he succeeded James Ferguson, Lord Pitfour as Senator of the College of Justice.
[3][4] He moved from Advocates Close to the briefly fashionable properties on the Buccleuch Street (just south of George Square just after it was built, around 1782, and died there in 1784.