The Battle of Port La Tour occurred on July 18, 1677, at Port La Tour, Acadia as part of the Northeast Coast Campaign during the First Abenaki War (the Maine-Acadia theater of King Phillips War) in which the Mi’kmaq attacked New England fishermen. The New Englanders eventually overwhelmed them and many Mi’kmaq were enslaved.
Prior to King Philip's War, there is no record of New England and the Mi’kmaq being in conflict. During the First Abanaki War, Major Richard Waldron captured natives for the slave trade. The most significant seizure of natives happened in Dover on September 7, 1676. Later Waldron gave a mandate to the merchant, Henry Lawton (or Laughton), of the Piscataqua area, to seize all the Indians "of the East" who had been raiding the New England villages along the border with Acadia. Lawton was assisted by William Waldron and John (Laverdure) Mellanson (a Huguenot whose brothers were Pierre and Charles Mellanson of Port Royal).
On November 9, 1676 (o.s.), they hired a vessel, the "Endeavor," commanded by Captain John Horton. They stopped at Machias and nine natives were taken captive. Then they sailed to Cape Sable Island where 17 Mi’kmaq were taken captive, including the local chief and his wife. They were taken to the Azores and sold as slaves to the Portuguese.
A New England vessel in the Azores notified the authorities in Boston of this possible illegal activity, and Endeavor was seized and taken to Boston. Mellanson was released when his mother, Prescilla Mellanson, bailed him out. After this, he skipped bail, and went into hiding. He changed his surname to Laverdure to avoid detection and lived in Port Royal thereafter. Henry Lawton and William Waldron were kept in jail but were eventually acquitted.