The widespread diffusion of the god Lug (seemingly related to the mythological figure Lœgh in Irish) in Celtic religion is apparent from the number of place names in which his name appears, occurring across the Celtic world from Ireland to Gaul. The most famous of these are the cities of Lugdunum (the modern French city of Lyon) and Lugdunum Batavorum (the modern city of Leiden). Lug is described in the Celtic myths as a latecomer to the list of deities, and is usually described as having the appearance of a young man. His weapons were the throwing-spear and sling, and in Ireland a festival called the Lughnasa (Modern Irish lœnasa) was held in his honor.
