The Collaborative International Dictionary of English v.0.48:

Mantua \Man"tu*a\, n.
   1. A superior kind of rich silk formerly exported from Mantua
      in Italy. [Obs.] --Beck (Draper's Dict.).
      [1913 Webster]

   2. A woman's cloak or mantle; also, a woman's gown. [Obs.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

mantua
    n 1: loose gown of the 17th and 18th centuries

U.S. Gazetteer Places (2000):

Mantua, OH -- U.S. village in Ohio
   Population (2000):    1046
   Housing Units (2000): 452
   Land area (2000):     1.407040 sq. miles (3.644217 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.407040 sq. miles (3.644217 sq. km)
   FIPS code:            47180
   Located within:       Ohio (OH), FIPS 39
   Location:             41.283705 N, 81.222973 W
   ZIP Codes (1990):     44255
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Mantua, OH
    Mantua


U.S. Gazetteer Places (2000):

Mantua, UT -- U.S. town in Utah
   Population (2000):    791
   Housing Units (2000): 231
   Land area (2000):     4.866287 sq. miles (12.603626 sq. km)
   Water area (2000):    0.738116 sq. miles (1.911711 sq. km)
   Total area (2000):    5.604403 sq. miles (14.515337 sq. km)
   FIPS code:            47840
   Located within:       Utah (UT), FIPS 49
   Location:             41.497399 N, 111.942292 W
   ZIP Codes (1990):     84324
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Mantua, UT
    Mantua


U.S. Gazetteer Places (2000):

Mantua, VA -- U.S. Census Designated Place in Virginia
   Population (2000):    7485
   Housing Units (2000): 2723
   Land area (2000):     2.421987 sq. miles (6.272918 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    2.421987 sq. miles (6.272918 sq. km)
   FIPS code:            49144
   Located within:       Virginia (VA), FIPS 51
   Location:             38.852012 N, 77.257675 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Mantua, VA
    Mantua