Katarzyna Tomicka (c.1510 â 1557) was a Polish noblewoman, known as the opponent of her sister-in-law queen Barbara Radziwià Âà Â.
Katarzyna was born around 1510 in an unknown location, the third daughter of podkomorzy of Kalisz, Jan Tomicki h. à Âodzia and sister-aunt of the Court Marshal and Bishop of Kraków, Piotr Tomicki h. à Âodzia. She died in 1557; it is not known exactly where she died.
Her sons initiated the so-called "Calvinist lineage" of the Radziwià Âà  family. The male line expired in 1669.
Katarzyna married Mikoà Âaj "Rudy" Radziwià Âà  around 1542 and had three children: