Long marginalized and misrepresented in the American story, the Wampanoags are braced for what’s coming this month as the country marks the 400th anniversary of the first Thanksgiving between the Pilgrims and Indians. But the actual history of what happened in 1621 bears little resemblance to what most Americans are taught in grade school, historians say. There was likely no turkey served. There were no feathered headdresses worn. And, initially, there was no effort by the Pilgrims to invite the Wampanoags to the feast they’d made possible.