Acadia has fallen under English sovereignty following the Treaty of Utrecht and the restoration of peace between France and England.
The sachems seek a truce when the natives realize that they can no longer depend on the French for protection, and propose a peace conference to be held at Casco.
Joseph Dudley, Governor of the Provinces of Massachusetts and New Hampshire, agrees to a conference, but chooses instead to host it at Portsmouth, New Hampshire, which is protected by the guns of Fort William and Mary.
Dudley and various dignitaries from New Hampshire and Massachusetts Bay (which at this time extends into Maine) meet On July 11, 1713, with delegates from Abenaki tribes, including the Amasacontee, Maliseet, Norridgewock, Pennacook, Penobscot and Sokoki.
The agreement is read aloud by sworn interpreters to the sachems, eight of whom sign with totemic pictographs on July 13.
Others will do so the following year after similar interpretation at another convention.
At the signing of the Treaty of Portsmouth are also the St. John River Maliseet [Wolastoqiyik], Mi'kmaw (Mi'kmaq), and Abenaki nations of Acadia.
The Wabanaki regard the Treaty of Portsmouth as the reaffirmation of the Treaty of 1699 at Mare's Point, limiting British settlements to the west of the Kennebec River, while the British also would keep Port Royal (Annapolis Royal).
The Mi'kmaq and Maliseet state that Acadia belongs to them, and that the French King cannot give it to the English King, since he does not own it.
The British make efforts to win over the Wabanaki by using superior goods and ceremonial presents for the fur trade.
They also try to have the Wabanaki expel French soldiers and priests from their villages, but without much success.
The Mi'kmaq do not sign the Treaty of Portsmouth.
The British see the 1713 Treaty of Utrecht and Treaty of Portsmouth as an opportunity to regain the settlements of Saco, Scarborough, and Falmouth, and a new chance to exploit the Wabanaki territories between the Kennebec and St. Croix rivers, in violation of the treaty.