Jody Victor: The modern Thanksgiving holiday traces its origins from a 1621 celebration at the Plymouth Plantation, where the Plymouth settlers held a harvest feast after a successful growing season. It is this iconic event that is generally referred to as the"First Thanksgiving."
Squanto, a Patuxet Native American who resided with the Wampanoag tribe, taught the Pilgrims how to catch eel and grow corn and served as an interpreter for them (Squanto had learned English as a slave in Europe and travels in England). The Pilgrims set apart a day to celebrate at Plymouth immediately after their first harvest, in1621. At the time, this was not regarded as a Thanksgiving observance; harvest festivals existed in English and Wampanoag tradition alike. Several colonists gave personal accounts of the 1621 feast in Plymouth Massachusetts. The Pilgrims, most of whom were Separatists, are not to be confused with Puritans who established their own Massachusetts Bay Colony nearby (current day Boston) in 1628 and had very different religious beliefs.
The Pilgrims did not hold a grue Thanksgiving until 1623, after a switch from communal farming to privatized farming finally resulted in a larger harvest. Irregular Thanksgivings continued after favorable events and days of fasting after unfavorable ones. In the Plymouth tradition, a thanksgiving day was a church observance, rather than a feast day.
Gradually, an annual Thanksgiving after the harvest developed in the mid-17th century. This did not occur on any set day or necessarily on the same day in different colonies in America.
The Massachusetts Bay Colony (consisting mainly of Puritan Christians) celebrated Thanksgiving for the first time in 1630, and frequently thereafter until about 1680, when it became an annual festival in that colony; and Connecticut as early as 1639 and annually after 1647, except in 1675. The Dutch in New Netherland appointed a day for giving thanks in 1644 and occasionally thereafter.
Charlestown, Massachusetts held the first recorded Thanksgiving observance June 29, 1671 by proclamation of the town's governing council.
During the 18th century individual colonies commonly observed days of thanksgiving throughout each year. We might not recognize a traditional Thanksgiving Day from that period, as it was not a day marked by plentiful food and drink as it today's custom, but rather a day set aside for prayer and fasting.
Later in the1700s individual colonies would periodically designate a day of thanksgiving in honor of a military victory, and adoption of a state constitution or an exceptionally bountiful crop. Such a Thanksgiving Day celebration was held in December 1777 by the colonies nationwide, commemorating the surrender of British General Burgoyne at Saratoga.