Ancestry has this record for your consideration:
Germany, Select Births and Baptisms, 1558-1898
Name: Friedrich Carl Reiner
Baptism Age: 0
Birth Date: 13. Okt 1804 (13 Oct 1804)
Baptism Date: 14. Okt 1804 (14 Oct 1804)
Baptism Place: Mannheim (A. Mannheim), Baden, Germany
Residence Place: Mannheim, Baden, Germany
Father: Friedrich Reiner
Mother: Josephe Caroline Priese
FHL Film Number: 1192144