What vicus did Saint Patrick say his family came from?

Saint Patrick wrote that his family came from the vicus of Bannavem Taburniae.

The detail appears in Patrick's Confessio, a first-person Latin work that is the most important surviving source written by Patrick himself. He identifies his father as Calpurnius, a deacon and the son of Potitus, and says that Calpurnius belonged to the settlement called Bannavem Taburniae. Patrick also mentions a small villa nearby, where he was captured at about age sixteen.

The name does not identify a securely located modern town. Historians have proposed several possibilities in Britain, including sites in Wales, Cumbria, Somerset, and near Hadrian's Wall. None has achieved universal acceptance, so Bannavem Taburniae is best treated as the ancient name Patrick actually recorded, not as a confirmed modern place-name.

The alternatives reflect different traditions or proposed identifications. Nemthor comes from a later seventh-century life of Patrick, while Banna Birdoswald and Luguvalium are Roman sites suggested by some birthplace theories. They are not the settlement named in Patrick's own Confessio.