The story
From Hopewell + -ian, after Mordecai Hopewell, whose family owned the property where the earthworks are sited.
Etymology from Wiktionary, CC BY-SA 4.0.
Hopewellian
Today it means: Relating to the Hopewell tradition, a network of Native American civilisations that engaged in exchange, flourishing during the first half of the first millennium CE. Full definition →