until yet i never heared that she was noble born. she was the only daughter of an office supplies dealer in Baden next to Vienna.
Katharina Schratt`s son Anton was born 1880.
she married in spring 1879 Nikolaus Kiss de Ittebe, who was of hungarian nobility.http://de.wikipedia.org/wiki/Katharina_Schratt
Wikipedia in english:http://en.wikipedia.org/wiki/Katharina_Schratt