Jacobitz - sloan

Hello List...

I am researching one of my families on my Father's side:

Johann JACOBITZ Born: 10 Jan 1810 Prussia (do not know where)
                            Father: Franz
                     Died: 16 Jun 1884 Fond du Lac County, Wisconsin

                        Married: Caroline SLOAN
                        Born: 5 Aug 1814 Prussia
                        Died: 6 Oct 1894 Fond du Lac County, Wisconsin

Children: 1. Annie Louise Born: 25 Mar 1839 Frindland (Friedland??)
Prussia
                 2. John P Born: 22 May 1842 Prussia
                 3. Frank Born: 27 Sept 1848 Prussia
                 4. August Born: 12 August 1854 New York State
                 5. Mary Born about 1857 New York State

Family immigrated to the United States about 1854 and settled in Monroe
County, New York and then in Fond du Lac County, Wisconsin.

Can anyone help me with my family?
Many thanks,
Louise