I'm looking for information on any of these family names. My children's great-grandparents were Eugene Pataki and Rose Popescu, who came from Romania (from Transylvania I understand). They emigrated to the United States in about 1920. There is a story in the Valian family that Valian was the original family name and that it was changed to Pataki at some point (possibly to avoid some kind of religious or ethnic persecution). One of Eugene and Rose's children (also called Eugene) changed it back to Valian but their other children (Herbert Michael Pataki and Eugenie Pataki) kept it.
If anyone has any further information I would be very grateful.