 According to some historians, the current name of Diano derives from the Romans who wanted to convert the local population to the cult of Diana, goddess of the hunt, weeding out the prehistoric god Bomano previously revered; this hypothesis has been disputed by other historians, however.Of the ancient Roman presence, some buildings still remain, discovered during excavations adjacent to the sports field.According to some sources, basic Christian education was provided around the 1st century by the saints Nazarius and Celsus, to whom the Dianese population later dedicated a small church near the sports field.