The island Cephalonia gave its name to a geologic area, called the Cephalonia transform fault zone. it is one of the most seismically active areas of the Mediterranean. The Cephalonia transform fault zone is NE-SW-oriented and runs about 155 km along the western coasts of Cephalonia and Levkas Islands. The main, earthquake associated to it is the MW 7.4 1867 event that caused extensive damage on the islands.
Source: Dario Slejko et al., 2010