from Wikipedia

Samoset (ca. 1590–1653) was a sagamore (subordinate chief) of an Eastern Abenaki tribe that resided at that time in what is now Maine. He was the first Native American to make contact with the Pilgrims of Plymouth Colony. On March 16, 1621, Samoset entered the encampment at Plymouth and spoke to the colonists. He had learned his broken English from fishermen that came to fish off Monhegan Island, and knew some of ship captains by name. Samoset is believed to have died around 1653 in what is today Bristol, Maine.

from the Davistown Museum’s extensive bibliographies

“Samoset was a native of Pemaquid — the Lord of Monhegan — an eastern prince — the great chief and original proprietor of the town of  Bristol, whose conveyance of the same to John Brown is the first landed title by deed acknowledged, ever given to a white man.” (Rufus King Sewall in Ancient dominions of Maine)

“In approaching the history of English-Indian contacts in New England, we are faced with the fact that contact commenced long before significant records were made.  For the casual reader, the history of New England began in 1620 with the landing of the Pilgrims on Plymouth Rock, yet he is confronted with the anomaly of Samoset’s greeting, ‘Welcome, Englishmen.'” (Gordon M. Day in In search of New England’s Native past: Selected essays by Gordon M. Day)

“There were three places at this time on this part of the coast of Maine that had become settled, or rather were fast settling, and were rapidly gaining notoriety, prosperity, inhabitants and success.  They were Pemaquid, Sheepscot, and Arrowsick; and to show the importance of the two former, in the year 1622, the Plymouth Colony, being in want of provisions, sent to Monhegan and Pemaquid for a supply which was readily granted. And it has been said without any contradiction, that the farm products that were sent to Plymouth at this time, came mostly from Sheepscot.” (David Quimby Cushman in The history of ancient Sheepscot and Newcastle, including early Pemaquid, Damariscotta, and other contiguous places, from the earliest discovery to the present time; together with the genealogy of more than four hundred families)