The Sefes sometimes also known as Cempsi were a people of ancient Iberia said to have lived on the coast of modern day Portugal and

Galicia Galicia may refer to: Geographic regions * Galicia (Spain), a region and autonomous community of northwestern Spain ** Gallaecia, a Roman province ** The post-Roman Kingdom of the Suebi, also called the Kingdom of Gallaecia ** The medieval King ...

. In his poem '' Ora Maritima'', the 4th century Roman author Avienius wrote that they were neighbours of the Cynetes, placing them in an upland district of the

Ophiussa Ophiussa, also spelled Ophiusa, is the ancient name given by the ancient Greeks to what is now Portuguese territory near the mouth of the river Tagus. It means Land of Serpents. The expulsion of the ''Oestrimni'' The 4th century Roman poet Ruf ...

region (near the mouth of the Tagus) close to an island he named ''Poetanion'' and that, along with another tribe called the ''Cempsi'' they had taken that territory by force from the previous rulers.Avienus, Ora Maritima, 190-199

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{{Pre-Roman peoples in Portugal Pre-Roman peoples of the Iberian Peninsula Ancient peoples of Portugal