About James Erskine, of Alva, Lord Barjarg
"Son of Charles Erskine of Tinwald, Lord Justice Clerk, was admitted advocate 6th December 1743, and constituted sheriff-depute of the county of Perth in 1748. In 1754, he was appointed one of the Barons of Exchequer; in 1758, Knight Marshall of Scotland, in the room of the Earl of Kintore, deceased; and on the death of Patrick Boyle of Shewalton, nominated one of the Judges of the Court of Session, and took his seat on the 18th June 1761, by the title of Lord Barjarg. His Lordship died on the 13th of May 1796, in the seventy third year of his age."
SOURCE: An Historical Account of the Senators of the College of Justice: From Its Institution in MDXXXII; by George Brunton, David Haig; 1832; Page 526