WordNet (r) 3.0 (2006):

Cassandra
    n 1: (Greek mythology) a prophetess in Troy during the Trojan
         War whose predictions were true but were never believed

Moby Thesaurus II by Grady Ward, 1.0:

58 Moby Thesaurus words for "Cassandra":
   Druid, Eeyore, Jeremiah, admonisher, astrologer, augur,
   calamity howler, cautioner, crepehanger, crystal gazer, cynic,
   defeatist, divinator, diviner, divineress, flagman, forecaster,
   foreknower, foreseer, foreshower, foreteller, fortuneteller,
   geomancer, haruspex, killjoy, lighthouse keeper, lookout,
   lookout man, malist, monitor, negativist, nihilist, palmist,
   pessimist, predictor, prefigurer, presager, prognosticator,
   prophesier, prophet, prophet of doom, prophetess, psychic,
   pythoness, religious prophets, retreatist, seek-sorrow, seer,
   seeress, sentinel, sentry, signaler, signalman, soothsayer, vates,
   warner, weather prophet, worrywart



U.S. Gazetteer Places (2000):

Cassandra, PA -- U.S. borough in Pennsylvania
   Population (2000):    136
   Housing Units (2000): 57
   Land area (2000):     0.075044 sq. miles (0.194362 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.075044 sq. miles (0.194362 sq. km)
   FIPS code:            11616
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.408989 N, 78.641040 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Cassandra, PA
    Cassandra