Old Russian literature consists of several masterpieces written in the Old Russian language (i.e. the language of Rus', not to be confused with the contemporaneous Church Slavonic nor with modern Russian). The main type of Old Russian historical literature were chronicles, most of them anonymous.[4]Anonymous works also include The Tale of Igor's Campaign and Praying of Daniel the Immured. Hagiographies (Russian: жития святых, zhitiya svyatykh, "lives of the saints") formed a popular genre of the Old Russian literature. Life of Alexander Nevsky offers a well-known example. Other Russian literary monuments include Zadonschina, Physiologist, Synopsis and A Journey Beyond the Three Seas. Bylinas – oral folk epics – fused Christian and pagan traditions. Medieval Russian literature had an overwhelmingly religious character and used an adapted form of the Church Slavonic language with many South Slavic elements. The first work in colloquial Russian, the autobiography of the archpriest Avvakum, emerged only in the mid-17th century.