(Specifically Scandinavia, Iceland, Finland, Gotland, Baltic lands, and Russian Slavic lands to the east of the Baltic) I am aware of recorded paganism in Henry of Livonia's Chronicle of Livonia (i.e. Taara, and idolatry) and The Chronicle of Novgorod (i.e. Perun, Simargl, Mokosh etc.), but any other knowledge on paganism from these regions ...