I haven't managed to find out much about Theresa or Matt since I posted this. A granddaughter of Margaret & Joseph Pelster has published a family history. She says Theresa lived in Ohio before she went to Illinois. I have found no trace. Matt Honvlez and Theresa were never married...The story is still that Matt died in the Chicago fire. No proof. That would have been after Theresa married Peter Kong. I do have a lot on the Pelster family...some of it is not in the family history book or corrects errors in the family history book. Which Pelster sibling does you niece come from? E-mail me. I can answer some questions.
K