Zöllner in Preetz

[Gaute]

Hi.
I need help to find mother and father of my great-grandfather/mother:
Carl Friedrich Zøllner born 12.11-1836 in ?, and died 31.12-1904 in Preetz, and his wife
Anna Dorothea Juliane Fahrenkrug born 08.06-1841, and died 05.11-1924 in Preetz.
This information I have got from my grandfather: Wilhelm Carl Heinrich Zøllner, who was born
28.01-1873 in Preetz and died 10.12-1948 in Oslo.
Carl Friedrich and Anna Dorothea had also this children:
Hugo born ? (was married in 1909)
Carl born ? (was married to Sophie)
Maria born ? ( was married to Mr. Kock)
Emil born ?

I need your help,
With sincere regards

Gaute