Thanks so much for taking the time to reply and also the
information shared. Am afraid I have very little on this family.
The children that I show for John and Teresa Petras Rehak
were: John - b. 1896, Jacob - b. 1901, Paul - b. 1904
and Rosa - b. ca. 1908. I have made several attempts when
in that area of PA to locate any descendants of this family,
and all have been unsuccessful.
Will keep in touch and maybe together we can be of help
to each other. Good luck with your Koelsch research.