Jadwiga Jagiellon
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Jadwiga Jagiellon (1457-1502) - was the eldest daughter of Polish King Casimir IV Jagiellon and Elisabeth of Austria .
In 1475 she married Bavarian Duke George of Bavaria in Landshut, which started the tradition of the famous medieval pageant Wedding of Landshut.
[edit] Genetics
Jadwiga is a matrilineal descendant of Elisabeth of Austria. Provided the genealogy is accurate, this implies that she and all her matrilineal relatives are members of mitochondrial haplogroup Haplogroup T.