Welcome to Killingly, Connecticut USGenWeb Project A Brief History of Killingly Killingly's first known settler was Richard Evens, who came from Rehobeth, MA in 1693. In the early 1700s other settlers came from the Boston, MA area. Killingly was incorporated in 1708. At the time of incorporation the borders of Killingly extended from Plainfield CT to the Massachusetts line and included what is ...

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