Hi Essnell
In 1877 Carl Kopitke and Adeline Schadowski (sic - I'm looking at an index, it should read Schadowska) registered a son Otto Herman Albert in the Żelazna registration district in Pomorskie (Pomeranian region in northern Poland). This would tie in with son Hermann, 49, on Adeline's death cert. All the mothers are listed under their maiden names in these records.
Lauenburg is now Lębork.
Gaie