 The region of the Lydian kingdom was during the 15th-14th centuries BCE part of the Arzawa kingdom.However, the Lydian language is usually not categorized as part of the Luwic subgroup, unlike the other nearby Anatolian languages Luwian, Carian, and Lycian.The relationship between the Etruscans (of northern Italy) and the Lydians has long been a subject of conjecture.