My great grandfather was Wojciech Jarzab (he was also called Albert). He was born in Roza on Aug 14 1884. His father was Jan Jarzab (born in Roza on Nov 7,1859) and his mother was Tekla Sobolec (born in Roza on Jan 11, 1855).
Jan Jarzab had a mother named Anna Jarzab, but we do not know who his father was. He obviously took his mother's name. I don't know anything about her except that her parents were named Andrzej Jarzab and Agnieszka Konieczny (I think).
If you have any information on this line, I'd be so grateful for your help. I'm leaving for Roza next Tuesday.