Lithuania converted to Christianity in 1387, but elements of the Lithuanian mythology survived into the 19th century and even nowadays it there are still groups of people believing in antique Lithuanian gods, legends, local and nature spirits and demonic beings. Earliest written sources, authored by foreigners and Christians, only briefly mention the Lithuanian gods. Beginning in the 16th century, the pagan religion received more attention from authors, but often their accounts were confused, contradictory, and heavily influenced by various religious agendas. Collection and recording of folklore began in the 19th century. By that time the pagan mythology became fragmented and mixed with Christian traditions. The cults of old deities transformed into folklore (individual tales, myths, songs, etc.) without associated rituals.