Berghaus or Seibertz in Westfalen

Joyous Advent to all of you,

I am becoming very discouraged in my search for these two families. I have searched LDS, Ancestry.com, genealogy.com, Google, etc. and can find nothing that matches these two men. Can anyone tll me if I am probably using the correct spellings. Do you suggest other spellings, such as Barkhouse or Seiberz? This is what I have:

Johann Bernard Berghaus
         born January 23, 1825
         died July 1, 1897 in Newton County, Missouri, US
         married at Holy Trinity Church in Cincinnati, Ohio on January 25, 1852
Clara Elizabeth Schnier of Greven
         born February 9, 1827
         died January 1, 1900 in Newton County, Missouri, US
They are Catholic.

Jacob Seibertz
         born ?
         married Maria Koopmann of Gelsenkirchen.
They married in St. Louis, Missouri and are Catholic.

Any information, no matter how little, will be very much appreciated.

Gina