Stibor, surname

Anybody familiar with surname Stibor? My great grandmother was Barbora Stibor b.16 December 1842, Jistebnice #173, South Bohemia. Her father was master tailor Frantisek Stibor. Her grandfather was Vojtech Stibor, a weaver. Barbora had at least three siblings: two brothers and a sister. She married Petr Kostka of Jistebnice in 1859. No record found of her coming to the USA. I have been through the Trebon matriky, but have questions.