In the summer of 1723 during Dummer's War, Arrowsic was attacked by the Norridgewocks and their 250 Indian allies from Canada. Incited by French missionary Sebastien Rale, they burned 37 dwellings and killed 300 cattle. The 40 inhabitants fled to the garrison, with only a child lost. When the fort could not be taken, the Indians disappeared upriver. During the French and Indian War, on June 9, 1758, marauding Indians shot Ebenezer Preble and a workman as they tended his farm on the northern end of the island. They then attacked his garrison, killing his wife and carrying away their 5 children to be sold as servants in Canada. It would be the last Indian massacre on the Kennebec River; next year brought the Fall of Quebec. On February 17, 1841, Arrowsic Island was set off from Georgetown and incorporated as the town of Arrowsic.