The Gallaeci were originally a Celtic people who for centuries had occupied the territory of modern Galicia and northern Portugal; bounded to the south by the Lusitanians and to the east by the Astures. In ethnic terms, they were the first Galicians (word derived from "Gallaeci"). The Gallaecians lived in fortified villages now called "castros" (Latin: "castra"): (hillforts), ranging from small villages of less than a hectare (more common in the north), to great hillforts with more than 10 hectares, named "Oppida" or "Citânia", which were more common in the southern half of the traditional settlement area.