The Chronicle by Dean Cosmas, Gesta by Gallus Anonymus and Povesť vremennych let (Tale of Bygone Years) by the monk Nestor present an identification retrospective of the already Christianized Bohemian, Polish and Old- Rus’ societies from the beginning of the 12th century. Although in terms of genre they are (in their introductory passages) categorized in the literary works of the „origo gentis“ type (Alheydis Plassmann, 2006), they are not merely a „rhetorical exercise“ for the narrow ecclesiastical elite but build on the long‑term trend of targeted acculturational transformations since the 9th century (vitae, memoriae, rituals). However, despite a similar mythology, linguistic proximity and the specific role of Old Church Slavonic, the Slavic ethnicity and states consolidate in European regional frameworks (not as a „Slavic world“).