Dedham ( DED-əm) is a town in and the county seat of Norfolk County, Massachusetts. The population was 25,364 at the 2020 census. It is located on Boston’s southwest border. On the northwest it is bordered by Needham, on the southwest by Westwood, and on the southeast by Canton. The town was first settled by European colonists in 1635.

Settled in 1635 by people from Roxbury and Watertown, Dedham was incorporated in 1636. It became the county seat of Norfolk County when the county was formed from parts of Suffolk County on March 26, 1793. When the Town was originally incorporated, the residents wanted to name it “Contentment.” The Massachusetts General Court overruled them and named the town after Dedham, Essex in England, where some of the original inhabitants were born. The boundaries of the town at the time stretched to the Rhode Island border.

At the first public meeting on August 15, 1636, eighteen men signed the town covenant. They swore that they would “in the fear and reverence of our Almighty God, mutually and severally promise amongst ourselves and each to profess and practice one truth according to that most perfect rule, the foundation whereof is ever lasting love.”

They also agreed that “we shall by all means labor to keep off from us all such as are contrary minded, and receive only such unto us as may be probably of one heart with us, [and such] as that we either know or may well and truly be informed to walk in a peaceable conversation with all meekness of spirit, for the edification of each other in the knowledge and faith of the Lord Jesus…” The covenant also stipulated that if differences were to arise between townsmen, they would seek arbitration for resolution and each would pay his fair share for the common good.

In November 1798, David Brown led a group in Dedham protesting the federal government; they set up a liberty pole, as people had before the American Revolution. It carried the words, “No Stamp Act, No Sedition Act, No Alien Bills, No Land Tax, downfall to the Tyrants of America; peace and retirement to the President; Long Live the Vice President,” referring to then-President John Adams and Vice President Thomas Jefferson. Brown was arrested in Andover but because he could not afford the $4,000 bail, he was taken to Salem for trial. Brown was tried in June 1799. Although he wanted to plead guilty, Justice Samuel Chase urged him to name those who had helped him or subscribed to his writings in exchange for freedom. Brown refused, was fined $480, and sentenced to eighteen months in prison. It was the most severe sentence up to then imposed under the Alien and Sedition Acts.

Dedham is home to the Fairbanks House, the oldest surviving timber-frame house in the United States, scientifically dated to 1637. On January 1, 1643, by unanimous vote, Dedham authorized the first taxpayer-funded public school, “the seed of American education.” Its first schoolmaster, Rev. Ralph Wheelock, a Clare College graduate, was paid 20 pounds annually to instruct the youth of the community. Descendants of these students would become presidents of Dartmouth College, Yale University and Harvard University.

The first man-made canal in North America, Mother Brook, was created in Dedham in 1639. It linked the Charles River to the Neponset River. Although both are slow-moving rivers, they are at different elevations. The difference in elevation made the canal’s current swift enough to power several local mills.