Loudon, New Hampshire was chartered by Governor John Wentworth in 1773. Loudon was originally a part of Canterbury. Loudon was named in honor of John Campbell, fourth Earl of Loudoun, a Scottish soldier and aide-de-camp to the king during the Seven Years' War. Under Lord Loudoun's orders Major Robert Rogers organized the famous Roger's Rangers frontier fighters. One of Lord Loudoun's aides, John Loudoun McAdam, is known for developing the macadamizing process of road surfacing. Loudon is home to the New Hampshire International Speedway.
