Koors/Kors/Kars

I am trying to find some information on my g-grandfather, John Henry Koors (or Johann Heinrich) b.abt.1809 in Oldenburg, according to one of the census. He married a Mary or Maria Kalkmann. I don't know if it was before or after the immigration to USA. Their oldest child, Bernard was born in 1843 in Cincinatti, Ohio. Any help is appreciated.
  Paula Redding

Paula

I have some tombstone photos of:

John H Koors born 09/28/1817 died 09/17/886
Mary A.G. wife of J.H. Koors born 03/17/1821 died 11/13/1869

Annie M. Koors
Born Dec.17 1847
Died May 19 1851

Eddie Koors
Born Sept 6 1878
Died Oct 6 1883

Mary Koors
1892
1895

They are in Mother of God Cemetery, Covington, Kenton County, Kentucky

Hope this is the correct family.

Thanks
Steve Hellmann of Edgewood, KY

Check this messages, Werner