[Ger-Poland-Volhynia] Poznan church records

[B Hirsekorn]

Other than the marriage records on the Poznan Project, are there any indexed Poznan records? Are any of those records online? 
Since the mid-1790s was the time of second and third partitions of Poland would any records for the Poznan area be on website for German genealogy?  

In looking for the marriage record for g-g-g grandfather Hirsekorn, Poznan is a guess so have no specific village to search. He was born in 1793, married before 1832 (an assumption based on the first? child's birth date). 

Betty Hirsekorn