Francis II of France
However, as a practicing Catholic, Montgomerie was a frequent target of criticism by Protestant clerics, and was said to attend daily mass and had a priest on his personal staff. He soon switched sides to support Mary Stuart. In December 1560, soon after the death of Mary's teenage husband, Francis II of France, Montgomerie signed a pledge of support for her in a meeting at Dunbar Castle. In February 1561, he traveled to France to visit Mary. Hamiliton returned with her to Scotland in August 1561, when she assumed the Scottish throne.