It might have been well, however, for the unfortunate Charles if he had been rather more swayed by the opinions of the tutor, and less by the lessons of the pupil. In the early part of Buchanan’s tutorship he attached himself strongly to the interests of the Regent, Murray; and as the patron fell off from the interests of Mary, so did the historian, till at last he became the bitterest of her enemies. He alone has ventured to assert in print his belief of her criminal connexion with David Rizzio, in his ‘Detectio Mariæ Reginæ,’ published in 1571; and he was her great accuser at the court of Elizabeth, when appointed one of the commissioners to inquire into Mary’s conduct, she being a prisoner in England. Buchanan too lies under the serious charge of having forged the controverted letters, supposed to have passed between Mary and her third husband Bothwell, while she was yet the wife of Earl Darnley, from which documents it was made to appear that she was art and part in the murder of her Royal Consort. Whether he really forged these letters or not, is a question perhaps too deeply buried in the dust of antiquity to admit of proof. He offered to swear to their genuineness, however, which was an ill return, if that were all his fault, to the kindness he had received from her. His friendship for Murray continued firm all his life; this man was one of the few persons he seems to have been really attached to. Through the Earl’s interest, Buchanan was made keeper of the Scottish seals, and a Lord of Session. Nothing is told us of his abilities as a practical politician, but it may be supposed that he was fitted for the office he held, for Murray was very careful in the choice of his public servants.