Trying to find a place of origin for Adam RYNTZ born 5/2/1848 in Germany/Prussia and his wife Rosalia WROSH born 8/24/1855 in Germany/Prussia. Both died in Detroit, MI. My husband's grandfather says they were Kashubs, but still do not know exactly where they might be from. Adam was naturalized on 10/5/1896 in Detroit, MI in which he renounced all allegiance & fidelity to William # Emperor of Germany. Any help would be appreciated.