It remains to be known if the Turduli Veteres, Turduli Oppidani, Turduli Bardili, and Turduli were Lusitanian tribes (coastal tribes), were related Celtic peoples, or were instead related to the Turdetani (Celtic, pre-Celtic Indo-European, or Iberians) and came from the south. The name Turduli Veteres (older or ancient Turduli), a tribe that dwelt in today's Aveiro District, seems to indicate they came from the north and not from the south (contrary to what is assumed on the map). Several Turduli peoples were possibly Callaeci tribes that initially came from the north, towards the south along the coast and then migrated inland along the Tagus and the Anas (Guadiana River) valleys.