William Van Norden was a printer while living in New York City, and a librarian while living in Brooklyn.  Per 1880 US census, Catherine's father was born in New Jersey, her mother born in New York.  Besides William, there appear to be no other Van Nordens born in New Jersey living in New York in the 1850 census of the right age.  His wife Sarah is also born in New York.  There are very few Van Nordens, and he is living only one house away from Charles Hicks in 1840.  Could possibly be her parents, but still needing evidence.  Him and his wife would have been a little young, and it's possible he could be an uncle, or other relative.