My great grandfather was John/Johannes Wulff/Wulff b Nov 17, 1854 in Schleswig, Holstein, Germany. His wife was b Mar 10, 1848, name Caroline Clark in family records but name doesn't seem Polish. His son Charles A Wulf born Feb 18, 1880 in NY City. I have a copy of John & Caroline wedding? but they divorced. I think marriage was in 1873. Does anyone know of her or of any earlier history of John?