Janice, I just happened to stumble across your post and I've tried several times to e-mail the person listed on the WIGenWeb site who indicated they were willing to do look-ups for St Peter & Paul in Nenno. Since it seems you have access to these records, could you be so kind as to check for any of the following?
John Koll was born 1819 in Germany, died between 1860 and 1870.
His wife is Mary Magdalina Koll.
Any birth records for:
Nicholas Koll, born 1848
Peter Koll, born 1850
Margaretha (or Anna Margaretha) Koll born 1852
John Koll born 1854
Elisabeth Koll born 1856
Marriage for Margaretha between 1869 and 1872.