The surname Kosack has a number of possible origins. Firstly it may be a version of Kozlow, which is, in turn, derived from the Russian "kozyol," meaning goat. In this case, the name would have been an occupational name of a goat herder. Or, the name could have been a nickname for someone who was very stubborn. Secondly, it was a name for a Cossack. The Cossacks were a group of people descended from runaway serfs, this group established a semi-military state within the Ukraine in the 15th and 16th centuries. Finally, this may have been a Jewish nickname for someone who was considered ruthless.
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Early Origins of the Kosack family
The surname Kosack was first found in Poland.
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Early History of the Kosack family
This web page shows only a small excerpt of our Kosack research. More information is included under the topic Early Kosack History in all our PDF Extended History products and printed products wherever possible.
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Kosack Spelling Variations
Spelling variations of this family name include: Khozak, Kosek, Kossak, Khozak, Kozick, Kozak, Kozik, Kozakiewicz, Koziarz, Koziarski and many more.
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Kosack migration to Canada
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Some of the first settlers of this family name were:
Kosack Settlers in Canada in the 19th Century
John Kosack, who landed in Halifax, Nova Scotia in 1899
Kosack migration to Canada 
Poland
