His last pamphlet was ' The Earldom of Mar : a Letter to the Lord Register of Scotland ' a reply to the Earl of Crawford 's criticisms on Glasgow 's judgment .
The Lord Register of Scotland is the Earl of Glasgow .
His last pamphlet was ' The Earldom of Mar : a Letter to the Lord Register of Scotland , the Earl of Glasgow , ' a reply to the Earl of Crawford 's criticisms on Glasgow 's judgment .