I might have a connection with your family tree. The two links below contain baptism records (1874, 1877)from Kassa Hungary (now Kosice Slovakia)for Joseph and Maria Olesniewicz. Their father is Gergly/Gregor Oles. who hales (as both records show) from Berest Galicia. He is Greek-Catholic. Joseph's record also shows Gregor's father as Josaphat(sp?) who is a farmer (agricola). BTW both Joseph and Maria (and many other siblings moved to US (PA and NY) in 1880's.
Could Josapha Olesniewicz be a relative to your Ephrosia (at best her brother)?