Statistics for occurrence #1 of “Gravisca” in book 10, card 176 of P. Vergilius Maro, Aeneid:
... horseman he,
Astur in gorgeous arms, himself most fair:
three hundred are his men, one martial mind
uniting all: in Caere they were bred
and Minio's plain, and by the ancient towers
of Pyrgo or Gravisca 's storm-swept hill.
...