I found this article by David Barton (Wallbuilders.com) about Thanksgivings that have occured in America. I found it very interesting! -Joseph Cook
The tradition introduced by European Americans of Thanksgiving as a time to focus on God and His blessings dates back well over four centuries in America. For example, such thanksgivings occurred in 1541 at Palo Duro Canyon, Texas with Coronado and 1,500 of his men; 1 in 1564 at St. Augustine, Florida with French Huguenot (Protestant) colonists; 2 in 1598 at El Paso, Texas with Juan de Oñate and his expedition; 3 in 1607 at Cape Henry, Virginia with the landing of the Jamestown settlers; 4 in 1619 at Berkeley Plantation, Virginia; 5 (and many other such celebrations).
But it is primarily from the Pilgrim’s Thanksgiving celebration of 1621 that we derive the current tradition of Thanksgiving Day.