 The name "Pescaglia" is thought by some to derive from the Latin "Pascualia", meaning pastureland, and by others from the verb "pescare", meaning "to fish".Both relate to the abundant natural resources of the territory.While mention of Piscalia or Pascualia exist from Roman times the first specific record of the town is thought to be in documents relative to the ownership of property by the church of San Pietro in Rome dated around the 9th century.