Ancus Martius in Roman Biography
An'cus Martius or Marcius, (mar'she-us,) the
fourth king of Rome, a grandson of Numa Pompilius,
succeeded Tullus Hostilius about 634 B.C. He is considered
the lawgiver or founder of the plebeian order,
which seems to have received in his reign a distinct political
existence. He waged war with success against
the Latins, founded Ostia, and built the Pons Sublicius,
(Bridge of Piles.) He died about 610, and was succeeded
by Tatquinius Priscus.
See Niebuhr, "Roman History."