Kossakowski (Lithuanian: Kosakovskiai)[a] was an aristocratic family of Mazovian origin.[1][2]
They were first mentioned in the 13th century and initially settled in Ciechanów County, from where they branched out to the Grand Duchy of Lithuania, Podolia, Volhynia, and Livonia.[1]
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- ^ a b Klempert, Mateusz (2014). "Dzieje Fortuny rodu Kossakowskich z Wojtkuszek". Doktoranckie spotkania z historią (PDF) (in Polish). University of Warmia and Mazury in Olsztyn. pp. 171–172. ISBN 9788365171047.
- ^ Mazur, Karol (2006). W stronę integracji z Koroną: sejmiki Wołynia i Ukrainy w latach 1569-1648. Neriton. p. 212. ISBN 9788389729804.