Hi Robert: My name is Jim Isovitsch and I am also from Butler. My grandmother was Anna (Petch) Isovitsch. I am retired and live in Englewood, Florida. My father was Emerick Isovitsch. I am writing to you to inform you that I have also researched the families you mentioned in your original message. I have some answers to your questions. I have put together a family tree that shows the relationship of these families. You can find the tree at Familysearch.org. This is a good site since it is free.
I hacv built the tree with help from a cousin, Margit Ischovitsch, in California. Give me a call if you want to; I am happy to discuss our backgrounds and the family tree..
Jim Isovitsch (5/27/2019)