Of course Italy - especially southern Italy - has earthquakes, particularly around that area's famous volcanoes: Vesuvius, Stromboli, Etna (and several others).
Here is a list of recent earthquakes in Italy:
https://en.wikipedia.org/wiki/List_of_earthquakes_in_ItalyThe well known written record that exists of the 79 A.D. eruption of Vesuvius was written by Pliny the Younger.
He was there, as it happened, and both of his letters do describe earthquakes occurring during the eruption:
http://www.pompeii.org.uk/s.php/tour-the-two-letters-written-by-pliny-the-elder-about-the-eruption-of-vesuvius-in-79-a-d-history-of-pompeii-en-238-s.htmAs to whether or not it was an earthquake that caused Vesuvius to erupt. . . that is kind of difficult to know at this remove (as is more usual, the volcano itself will cause earthquakes, as magma moving underground causes fracturing). There was a large earthquake in 62 A.D. that has been speculated to have been a precursor to the awakening of Vesuvius. But the span between 62 A.D. and 79 A.D. seems to be rather longish for this earthquake to have been a precursor.
For example, the first small earthquakes - signaling that Mt. St. Helens
might be awakening - began on March 16, 1980. The major eruption that removed about 1300 feet from the top of St. Helens, and destroyed 200 square miles of forest surrounding the volcano (laying giant pines on the ground like matchsticks) happened on May 18, 1980.
Barely 8 weeks later.


Photo of Volcanologist David A. Johnston, a personal hero of mine.
Anne