The Alaisiagae

The Alaisiagae are two goddesses worshipped in Britain at a Roman fort on Hadrian’s Wall. They are particularly interesting in that they were known by two sets of names, one Celtic (Beda and Boudihillia) and one Germanic (Frigabis and Fimmilena); Beda corresponds to Frigabis, Boudihillia to Fimmilena. It is likely that they were considered goddesses of war and battle given that they were worshipped at a military site.

The modern German city of Bitburg was once known as Beda Vicus or “Beda’s village.”

The Alaisiagae were accompanied by Mars Thingsus (Mars of the Thing), a name often used to refer to the Germanic god Tyr or Tiwaz.

There are arguments to be made for identifying the goddesses as either Celtic or Germanic.


The Alaisiagae received votive and dedicatory offerings from their worshippers; otherwise little is known of the specifics of their cult.

The origins of the the goddesses’ names are uncertain. Simek suggests, given that the goddesses are accompanied by the god of the Thing, Mars Thingus, that Boudihillia and Friagabis could be related, respectively, to the Frisian bodthing or “summons” and Fimelthing or “sentence.”

The Alaisiagae are known from three inscriptions at the Roman fort at Housesteads in Northumberland, England.

Literary evidence

Archaeological evidence
Housesteads, England

Toponymic evidence
Bitburg, Germany (Vicus Beda)