Jan Łasicki created "De diis Samagitarum caeterorumque Sarmatarum et falsorum Christianorum" ("Concerning the gods of Samagitians, and other Sarmatians and false Christians") - written c. 1582 and published in 1615, although it has some important facts it also contains many inaccuracies, as he did not know Lithuanian and relied on stories of others. The list of Lithuanian gods, provided by Jan Łasicki, is still considered an important and of interest for Lithuanian mythology. Later researchers Teodor Narbutt, Simonas Daukantas and Jonas Basanavičius relied on his work.