About John Campbell, 2nd of Lundie
"Sir John Campbell of Lundie was nominated Treasurer on the 8th June 1515, by the Duke of Albany, in which office he continued till 1526, when the Master of Glencairn succeeded him through the influence of the Douglases. He was nominated one of the original Judges of the Temporal Side; but we afterwards find him, as was indeed not unusual, practising as an Advocate before the Court...
...On the 16th May 1553, Sir John Campbell was appointed Captain-General till all the fute bands of Scotland, with the power to brek, punnis or put away quham he finds falty, and to ressaiv and input in their steids, as he sall think expedient. He was also employed in various diplomatic services, and among others in concluding a peace ratifying the privileges of the Scots in the countries under the dominion of the Emperor, and Mistress Margaret, Duchess of Flanders."
SOURCE: An Historical Account of the Senators of the College of Justice: From Its Institution in MDXXXII; by George Brunton, David Haig; 1832; Page 21
In some materials this Judge is identified as the son of John Capmbell of Lundy, High Treasurer of Scotland, but as noted in An Historical Account of the Senators of the College of Justice it seems very "doubtful whether there were two Sir John Campbells of Lundy at that period" and have followed the position proposed in that book at they were indeed the same individual.