Buchanan’s plan clearly was to accuse the persons whom it was convenient to accuse, at any given time; and to alter his account of the method of the murder so as to suit each new accusation. Probably he was not dishonest. The facts ‘were to him ministered,’ by the Lords, in 1568, and also by Lennox. Later, different sets of facts were ‘ministered’ to him, as occasion served, and he published them without heeding his inconsistencies. He was old, was a Lennox man, and an advanced Liberal.
Of one examination, which ought to have been important, we have found no record. There was a certain Captain James Cullen, who wrote letters in July 13 to July 18, 1560, from Edinburgh Castle, to the Cardinal of Lorraine. He was then an officer of Mary of Guise, during the siege of Leith.[153] In the end of 1565, and the beginning of 1566, Captain Cullen was in the service of Frederic II. of Denmark, and was trying to enlist English sailors for him.[154] Elizabeth refused to permit this, and Captain Cullen appears to have returned to his native Scotland, where he became, under Bothwell, an officer of the Guard put about Mary’s person, after Riccio’s murder. On February 28, 1567, eighteen days after Darnley’s murder, Scrope writes that ‘Captain Cullen with his company have the credit nearest her’ (Mary’s) ‘person.’ On May 13, Drury remarks, ‘It was Captain Cullen’s persuasion, for more surety, to have the King strangled, and not only to trust to the powder,’ the Captain having observed, in his military experience, that the effects of explosions were not always satisfactory. ‘The King was long of dying, and to his strength made debate for his life.’[155]
To return to honest Captain Cullen: after Bothwell was acquitted, and had issued a cartel offering Trial by Combat to any impugner of his honour, some anonymous champion promised, under certain conditions, to fight. This hero placarded the names of three Balfours, black John Spens, and others, as conspirators; as ‘doers’ he mentioned, with some companions, Tala, Bowton, Pat Wilson, and James Cullen. On April 25, the Captain was named as a murderer in Elizabeth’s Instructions to Lord Grey.[156] On May 8, Kirkcaldy told Bedford that Tullibardine had offered, with five others, to fight Ormistoun, ‘Beynston,’ Bowton, Tala, Captain Cullen, and James Edmonstone, who, says Tullibardine, were at the murder. On June 16, 1567, the day after Mary’s capture at Carberry, Scrope writes, ‘The Lords have taken Captain Cullen, who, after some strict dealing [torture], has revealed the King’s murder with the whole matter thereof.’[157] Scrope was mistaken. He had probably heard of the capture of Blackader, who was hanged on June 24, denying his guilt. He had no more chance than had James Stewart of the Glens with a Campbell jury. His jury was composed of Lennox men, Darnley’s clansmen. Our Captain had not been taken, but on September 15 Moray told Throckmorton that Kirkcaldy, in Shetland, had captured Cullen, ‘one of the very executors, he may clear the whole action.’[158]