Alexander Murray, a military officer of Scottish origin, arrived in Louisbourg in 1746 with the 45th Infantry Regiment, of which he was Captain. His regiment relieved the troops that ensured British control over the Fortress Louisbourg and remained until July 1749, the fortress having been returned to France the previous year after the Treaty of Aix-la-Chapelle was signed. He was appointed Commander at Fort Edward in Pigiguit (today's Windsor, Nova Scotia) in 1751 and Lieutenant-Governor Charles Lawrence put him in charge of expelling the Acadians from that region during the Deportation in 1755. Promoted to Major in the 45th Regiment in October 1755, Murray took part in the British expedition against Louisbourg, led by Jeffery Amherst in 1758, and to the one against Québec, led by James Wolfe the following year. In November 1761, he embarked to attack Martinique and died there in March 1762.