Katarzyna Banach

Stefan Banach – matematyk, jeden z przedstawicieli lwowskiej szkoły matematycznej. Wikipedia PL

Wikipedia Biogrpahical Summary:

"...Stefan Banach was born on 30 March 1892 at St. Lazarus General Hospital in Kraków, then part of the Austro-Hungarian Empire. Banach's parents were Stefan Greczek and Katarzyna Banach, both natives of the Podhale region. Greczek was a soldier in the Austro-Hungarian Army stationed in Kraków. Little is known about Banach's mother.

Unusually, Stefan's surname was that of his mother instead of his father, though he received his father's given name, Stefan. Since Stefan Greczek was a private and was prevented by military regulations from marrying, and the mother was too poor to support the child, the couple decided that he should be reared by family and friends.[3][4][5] Stefan spent the first few years of his life with his grandmother, but when she took ill Greczek arranged for his son to be raised by Franciszka Płowa and her niece Maria Puchalska in Kraków. Young Stefan would regard Franciszka as his foster mother and Maria as his older sister...."

SOURCE: http://en.wikipedia.org/wiki/Stefan_Banach