Hugh Montgomerie, 3rd Earl of Eglinton

Hugh Montgomerie, 3rd Earl of Eglinton (c. 1531 – 1585) was a Scottish aristocrat who was a strong supporter of Mary Queen of Scots. He was an important participant in a tumultuous period of Scottish history.

Born in 1531, Montgomerie was the great-grandson of Hugh Montgomerie, 1st Earl of Eglinton. He attended St. Mary's College, St. Andrews in 1552. Soon after, Montgomerie married Janet Hamilton, the daughter of James Hamilton, then First Earl of Aran.

Although Montgomerie was a Catholic, he originally supported his Protestant father-in-law politically. In October 1559, Montgomery brought forces to Edinburgh to support Hamilton and the Scottish Lords of the Congregation against French forces supporting the exiled Mary Stuart and the current Scottish government. In December 1559, Montgomerie renewed his pledge of support.

However, Montgomerie 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.

A practicing Catholic, Montgomerie was a frequent target of criticism by Protestant clerics. He was said to attend daily mass and had a priest on his personal staff.

On 15 May 1568, Montgomerie joined Mary's forces at the Battle of Langside. After their defeat, he fled the field and spend the night hiding in an outhouse. On August 19th, Parliament declared Montgomerie guilty of treason for failing to turn over his castles to the victor. In May 1571, he finally swore allegiance to the Matthew Stewart, 4th Earl of Lennox, the regent for the young king James VI.

In September 1517, Montgomerie was with Stewart when he was killed at a skirmish in Stirling. The raiding party, which included the Hamiltons, locked Montgomerie in his quarters under guard.

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