I noticed your name on the message board. I have quite a few Kristofeks in my family tree. George and Katarina came from Austria to Pennsylvania with 2 sons in 1888. One of their sons, George, Jr. moved his family to Chicago about 1905. His daughter, Mary was my grandmother.
Does any of this fit into your family tree? If so, I would love to exchange information with you. I hope to hear from you.
All the best,