Alexander Macomb was born in Detroit on April 3, 1782, though he moved to New York and was schooled in New Jersey.
When however the war of 1812 broke out, he asked to be transferred to the artillery because there would be little opportunity of distinguishing himself in his old corps [of Engineers]. He was appointed a Colonel and given the command of the third regiment. ...in November 1812, Macomb was able to join the army on the northern frontier with his new command. Here he distinguished himself at Niagara and Fort George. In January, 1814, he was raised to the rank of Brigadier. The charge of the country bordering on Lake Champlain was now entrusted to him and it was here that he won the battle of Plattsburgh, one of the most gallant victories of the war. [Source]
He died on June 25, 1841.