Katz = surname; Bachine = surname, hence compound noun
The article is about first names that were approved in Germany, though.
You find a number of different articles on funny first names getting approved in Germany if you google "Katzbachine".
According to
this article, some parents named their child "Talula does the Hula from Hawaii". The child sued them at the age of 9 for that and the parents were stripped of their legal custody for the child. I have no idea whether that's true or not, though.
Apparently, you can't name your child
Anus in Germany.
The name
Gneisenauette seems to have a similar word formation as
Katzbachine (place name + female suffix).
Maybe the children were named after the place of conception.