Overview
Don Cossacks or Donians, are Cossacks who settled along the middle and lower Don. Historically, they lived within the former Don Cossack Host, which was either an independent or an autonomous democratic republic in present-day Southern Russia and parts of the Donbas region of Ukraine, from the end of the 16th century until 1918. As of 1992, by presidential decree of the Russian Federation, Cossacks can be enrolled on a special register. A number of Cossack communities have been reconstituted to further Cossack cultural traditions, including those of the Don Cossack Host.
Don Cossacks have had a rich military tradition - they played an important part in the historical development of the Russian Empire and participated in most of its major wars.
Etymology
The name Cossack was widely used to characterise "free people" (compare Turkic qazaq, which means "free men") as opposed to others with different standing in feudal society (i.e., peasants, nobles, clergy, etc.). The name "cossack" was also applied to migrants, free-booters and bandits.
It has the same etymological root as "Kazakh", an unrelated Central Asian Turkic people.
Origins
The exact origins of Cossacks remain unclear. In the modern view, Don Cossacks descend from Slavic people connected with Russian lands like the Povolzhye, the Novgorod Republic, and the Principality of Ryazan, and Ukrainian lands like the Dnieper. As well as nomadic Turkic tribes inhabiting the Steppes. Gotho-Alans could also have played a role in forming Don Cossack culture, which originated in the western part of the North Caucasus.
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