Carlo Ferrari argues for the re-emergence of Celtic – and, in fact, Eurasian – religiosity in Gaul in the upheaval of late antiquity: Santi e sciamani. Una lettura storico-religiosa della Gallia tardoromana, Sesto San Giovanni: Mimesis, 2022. See the publisher’s catalogue.
The book is an adaptation of Ferrari’s PhD thesis ‘Observatio paganorum: pratiche e comportamenti religiosi nella Gallia tardoantica (IV-VI secolo d.C.)’, Florence, 2019, which is available in open access here.