I hope you get this...several years later!! My Grandmother was Julia Zavacky of Lyndora, PA which is technically Butler,PA. She is the daughter of John Harry Zavacky and Anna Janesko. According to my aunt, the family came from Mikova in Slovakia. The town is located in the Carpathian Mountains near the Polish border. John Harry Zavacky's parents were Harry Zavacky and Catherine Onufrak from Mikova. I am going to a family reunion in July and plan on getting all the info I can. I will share it. I believe this is the "other" Zavacky family you mentioned. My last name is Herrock (Hirjak). My father is John Herrock, son of Julia Zavacky and Gyurka Hirjak (George Herrock). I can try to give you more information. I believe the names you mentioned may be cousins if not brothers to the family I am related to.