Hi: My relatives were from Grove City in Mercer County. The came to PA from Ireland (by way of England) and had at least two children in Grove City around 1877 -George and 1878 Mary Ella (Alice). Older children were David, Robert, Thomas, and John. There may have been a daughter Maggie who died between 1870 census and 1877. Their names were Hannah (Finn) and John O'Connor. Thanks, Lita Eastman