For the first time in Udmurt historiography, a historical and linguistic description of all regions and individual regions where the formation of the Udmurt people took place - from the northernmost point of the Udmurt eikumen (Dondykar village of the Glazovsky district of the Udmurt Republic) to the extreme southern settlement where the Udmurts live (Ursygurt village of the Bavlinsky district of Tatarstan). Data from history, ethnography, linguistics, onomastics, folklore are involved. The book is designed for teachers, local historians, historians, linguists, geographers, students of secondary schools, schools, colleges, gymnasiums, a wide range of readers interested in the history of the origin of the Udmurt people.