Baduhennna is solely attested by Tacitus' Annals where Tacitus records that a grove in Frisia was dedicated to her, and that near this grove 900 Roman prisoners were killed in 28 CE.
Tacitus' Annals are the only records of Baduhenna. Here, Tacitus claims that a grove in Frisia was dedicated to her. He claims that near this grove, 900 Roman prisoners were killed in 28 CE.