Baduhenna is solely attested in Tacitus's Annals where Tacitus records that a sacred grove in ancient Frisia was dedicated to her, and that near this grove 900 Roman soldiers were killed in 28 CE.
Scholars have analyzed the name of the goddess and linked the figure to the Germanic Matres and Matronae.
The first element of the goddess's name, Badu-, may be cognate to Proto-Germanic *badwa- meaning "battle."
[1] Baduhenna is solely attested in book 4, chapter 73 of Tacitus's Annals.
In chapters 73 and 74 of Annals, Tacitus describes the defeat of the Roman army in ancient Frisia: Original Latin (1st century CE): Church and Brodribb translation (1876):