Bonnie I believe there is a family history on these Wohlperts in the Butler Library. The name ended up Anglecized as Wilbert. Many of them are also in the Collins Family History. Joseph Wohlpert (1840-1890) was the son of Barnhart (Bernard) Wohlpert. Martin Wohlpert (1838/9-1922) was his brother. Joseph Wohlpert born 1840, died 1890, changed his name to Dittmer. He married Eva Appalonia MIchel (1843-1909) Their son, Joseph J. Dittmer 1870-1952 married Maria Wolpert (1878-1979). Joseph born in 1870, is one month old when the census was taken 11 June of that year. You could send to New Castle for death certificates on all who died after 1906. The death certificate information includes the place of interment. These folks also may show up in the Butler County Cemetery inventories that are at the library. Pat