Thank you for your help, Frank. I am really looking for the best method to "break down the wall" rather than specific information on my ancestors. I have, to date, telephoned Calvary Cemetery in New York to inquire about my great aunt Ellen Barry (b 1867, d 1875). The person answering the phone was very helpful in that she gave me the information on the grave location and that "Nellie" Barry was the sole occupant of the grave whose owner is listed as John Barry. I had originally hoped to find that she was buried in a family plot and that perhaps her grandparents or other family member could be traced from there but it seems it is another dead end. Her family relocated to Derby Connecticut where most of them are now buried. The reason I believe it is her grave is that Nellie Barry was buried two days after Ellen died, in April 1875. Apparently her name is also engraved on the family monument in Mount St. Peter's Cemetery, Derby CT. Most of that information tallies with records in the family bible except I don't know who "John Barry", the grave owner might be.