Mountain Town Murders at Montville   Montville (Mountain Town), Maine, was first settled in 1780 and then incorporated on February 18, 1807, from an area once known as Davistown Plantation. It is a diamond-shaped rural township of approximately 43 square miles, in what is now Waldo County.    Located approximately 15 miles west of Penobscot Bay, it lies in the shadow of the Frye Mountain State Ga…