Welcome to Dover, New Hampshire. For the first fifty years of New Hampshire's history, Dover was one of only three communities established in the state. Settled in 1623 on the banks of the Piscataqua River, Dover was first called Hilton's Point, named after Edward Hilton, leader of the company of Englishmen who landed at Dover Point. It was also known by the Indian names of Newichwannock (place of wigwams) and Cocheco. The town was probably named for Dover, England. In 1855, Dover was incorporated as a city.