A historical marker has gone up outside the Old Brick Courthouse in Rockville honoring Montgomery County’s namesake. Montgomery was a career British Army officer who joined the American cause of freedom at the start of the Revolution. Commander-in-Chief George Washington put him in charge of the western army that marched into Canada, trying to help the colonists there to throw off the British crown and join the American cause. He was killed in the attack on Quebec on Dec. 31, 1775, making him the first general to die in the American Revolution.