References to Kostiuk are found in the variant form Kosty, that being the surname of a noble family from Poland who was ennobled in 1790. Another reference mentions a family named Kostka who was a sept of the great clan Dabrowa. The ancestral seal of this family was located in the region of Mazovia where they were recorded in 1464. A member of this house, Stanislaw, was the governor of Chelmno, and faithful servant of King Zygmunt I. He became famous for his courage at the battle of Wisniowierz against the Tartars. He died in 1555. Jan Kostka was the governor of Sandomiers and died in 1581. Among the aristocracy of Poland was also listed a family named Kostkiewicz, who was a sept of the clan Rogala.
Blazon of Arms:
Azure, a horseshoe argent, ensigned by a cross plate or, placed in pale, and two crosses plate fitche of the last, placed in bend and in bend sinisterwise.
Issuing from a crowned helmet, a wing sable, transfixed by an arrow argent, placed in fess, the point towards the sinister.
UkraineSource of the above information: The Historical Research Center.
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Last Update: November 4, 2007.