Hello Theresa!
I believe the name you need is Neuenhoff.
I have a great grandmother Ida Rosalie Neuenhoff, b around 1850, who lived in Bremerhaven, Germany. At this point I have trouble tracing her family, however I found a Johanna Neuenhoff, b abt 1884, who lived in Bremerhaven and sailed on board "Friedrich der Grosse" in September 1909 from Bremen to NY. She shows up in the NY 1910 census under the name Hannah Newhoff, living in Queens with her uncle Emil Dernbach (Dunbach)and aunt Josephine Dernbach. Both came originally from Germany. I suspect Johanna was a niece of my great grandmother.
Hope this helps in your search.