The Gallaeci or Callaeci were an ancient Celtic tribe of Gallaecia, living in the northwest of modern Portugal, roughly in today's western half of the Porto District, from the west of the Tâmega river valley to the Atlantic coast in the west and north of the Douro river.[1]
Their territory was in a strategic position at the low course of the Douro river, because land and maritime routes, including trade routes, crossed their territory between the north and the south or vice versa, and from the east to the west or vice versa.
The Madeira, Azores, and Canary Islands were not occupied by the Romans. The Madeira and Azores islands were unoccupied until the Portuguese in the 15th century; the Canary islands, the Guanches occupied the territory until the Castilians.