- Province in southern Portugal, extending from the southern margin of the Tagus river.
- The border regions of this province were subjected to frequent Castilian incursions, especially during the reigns of King Fernando and King João I of Portugal.
- The Constable Nuno Álvares Pereira was an important officer of the marches in this region, especially when Juan I of Castile invaded the kingdon in 1384.
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Chronicle entries in which Alentejo appears:
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