an ancient town of Italy, in the territory of the church, and in the marca or march of Ancona, with a bishop's see. It is seated on a mountain, near a river of the same name, in E. Long. 12. 20. N. Lat. 43. 50.

JESSO, Jedso, or Tadso, a large island of Asia to the north of Nippon, and said to be governed by a prince tributary to the empire of Japan; but is very little known to the Europeans, so that nothing can be said with certainty concerning it.