Favaios (Portuguese pronunciation: [fɐˈvajuʃ]) is a civil parish of the municipality of Alijó, in northern Portugal.

[3] The founders came from the families and relations of the Flavian dynasty, of Imperial Rome, who rose to prominence after Emperor Titus Flavius Caesar Vespasianus Augustus.

[3] The invasion of the Iberian peninsula by Arabs reached the north, where the Moors took the Roman Castle of Flávias: it would later be remembered as the "Castelo dos Mouros” (English: Castle of Moors).

This occupation forced the locals to escape the region and re-established settlements away from Favaios: half the population took refuge in the area that would be renamed São Bento.

[3] Strangely, during the reign of Manuel I the charter was revoked in 1514, to be reinstituted the following year, ordering that the local fountain be marked with the Royal shield over an armillary sphere, surmounted by a crown.