 Complete the following phrase:  Leslie took an active part with the Lords of the Congregation, first against the queen-mother, Mary of Guise, when she was regent of Scotland, and afterwards against Mary, Queen of Scots in opposing her marriage with Lord Darnley, and in being part of the plot to murder David Rizzio. He was, however, one of the peers who acquitted Bothwell of Darnleys murder, and went over to the side of the queen. He fought for her at the 