I am researching the Bohringer Family who came to Australia in 1855 on the Commodore Perry. That Catherine Bohringer listed on shipping lists was actually Catherine Brandtz (Brand)aged 32.
Catherine M Bohriner married James McFadden in Orange 1875.
Catherine McEvoy married John Felix Bohringer in 1863 in Orange.
I'm pretty sure your Catherine Bohringer is related to this lot. Do you know her parents names?