In Gallo-Roman religion, Segomo ("victor, mighty one") was a war god worshipped in Gaul. In Roman times he was equated with Mars and Hercules. He may be related to Cocidius, a similar god worshipped in Britain.[1] The name of the legendary High King of Ireland Nia Segamain, which translates as "sister's son or champion of Segamon",[2] may be related.