Dummer's or Lovewell's War: Conflict erupted again in 1721, after further hostilities during peace time over land use. Angered by the increasing encroachment of the English settlers, some Wabanaki had killed several cattle and burned crops and buildings. Massachusetts retaliated by taking four Wabanaki prisoner, as well as a Frenchman--Joseph d'Abbadie, the son of the French Baron de St.-Castin. D'Abbadie lived in the Penobscot Valley, among a Wabanaki tribe there, and had married Pidimamiska, the daughter of a powerful Wabanaki chief. Fighting continued for six years. Father Sebastian Rale, a French Jesuit priest that had established a mission in Norridgewock, was slaughtered in this war, as were many of his neophytes. Another battle in the upper Saco River Valley took the lives of twenty Wabanaki Indians and twenty Englishmen, including their commander, John Lovewell. Lovewell's War brought destruction to most remaining Wabanaki villages, forcing most of the Wabanaki further northward into Canada or eastward, away from the English. While the Wabanaki tribes had been a strong military force during the first three colonial wars, this war depleted much of their power.