Hi, Ineke,
It's me again since I've forgotten to mention one additional information
which might be useful for a better understanding.
In your initial mail you mentioned the town of Minden, Westphalia, Prussia
and I probably found your ancestor in Herford, Westphalia, Prussia.
Back then Herford was part of the "Regierungsbezirk Minden" = administrative
district of Minden. May be that's the reason why Minden is mentioned.
Hope that helps.
Kind regards,
Vera
BTW: The corresponding IGI batch number for marriages is M966761