Teaming up with Nipmuc and Narragansett warriors, the Wampanoag successfully raided the town of Lancaster, securing provisions and prisoners to help them carry on into their winter offensive.
In 1675, the Wampanoag sachem Metacom cited his grievances as, "English cheating, discrimination, and pressures to sell land, submit to Plymouth colony's authority, convert to Christianity, and consume alcohol".
[1] Tensions continued to escalate until August 1675, when the Nipmuc from Nashaway staged an attack on Lancaster colonists, led by their sachem Monoco.
For better defense, Lancaster built several garrison houses, large structures in which many colonists would gather during times of military strife, protected by fourteen stationed soldiers.
In December 1675, Daniel Gookin and the other leaders of the Massachusetts Council recruited two Christian Nipmuc men, James Quannapohit and Job Kattenanit, to act as spies.
But only Marlborough received word by the next morning, and their forces were unable to reach Lancaster until after the Indians had raided and set the town on fire.
[1] As in the August 1675 attack, Monoco, known as "One-Eyed John" by the English, as well as Sagamore Sam, planned and led the raid.
After they reached the town, the Indian forces burned the entry bridge, preventing access by outside English reinforcements could not easily enter.
After the raid, the medicine man, Tantamous (Old Jethro), and ten other Nipmuc were falsely accused of the killings, allegedly due to their "singing, dancing, and having much powder and many bullets and slugs hid in their baskets."
In addition, Peter Jethro, Tantamous's son, aided the settlers by communicating with the captors of Mary Rowlandson to obtain her release.