I am looking for information on my gggrandfather Frederick Renard, born 1819 in Cologne Germany, immigrated to Wisconsin in 1847, then to Nebraska in 1860, died 1913 in Oakland NE. His wife's name was Anna Wulf or Wolf, born 1819 in Hannover Germany, died 1898 in Oakland NE. He was the only surviving child of parents Andreas Renard and Maria Elizabetha Pauli (1794-1822) of Cologne. His maternal grandmother was Mary Elizabeth Dumoulin, born in Bonn Germany in 1869. He claimed his ancestry was "entirely French" although everyone seems to have been born in Germany. He had 9 children. I have run into dead ends regarding his wife, his father and his maternal grandmother. Any information on them would be appreciated.