In Roman historian Tacitus's first century CE book Germania, Tacitus describes the veneration of what he deems as an "Isis" of the Suebi. Due to Tacitus's usage of interpretatio romana elsewhere in the text, his admitted uncertainty, and his reasoning for referring to the veneration of an Egyptian goddess by the Suebi—a group of Germanic peoples—scholars have generally held that Tacitus's identification is incorrect, and have debated what goddess Tacitus refers to.