I think that we might have conversed before a few years ago, but just in case, I'll give you the information I have. Hopefully it will be of some use to you. Many members of my family currently live in the west mifflin area, however, they are not the great aunts of yours. I think if your grandfather Wally Valentine Wargo was related to Charles Wargo, he could possible either the brother or son of the Charles Wargos that i know of: 1.) Charles Andrew Wargo Jr., who was born in 1897 in Hastings PA and later moved to Spangler, dying there in 1975 (his children by wife Martina Gustashaw/Kostichak included Charles III, Francis, Paul, Tom, Vernie, Edward, Helen, David, Julie, Martina, Mike, Joe, James, Stephen, and Bernard) or 2.) his father Charles Andrew Wargo Sr., who was born 1864 around the Austria Hungary border and later immigrated to the United States and married a woman named Anna. The information I have says that they were from around the Austria-Hungary border but I know that around that time it was considered Slovakia as well, and both Charles spoke fluent Slovak. If any of the dates or names match up with yours please let me know. Thanks.