It appears that this is our Hermann Knoch coming to America with his parents & siblings:
Name:Hermann Knoch Arrival Date:Aug 15, 1837 Age:32 Gender:M Port of Arrival:New York Port of Departure:Hamburg, Germany Place of Origin:Sachsen Occupation:Miller Destination:Ohio Ship:Ship Columbia Microfilm Serial Number:M237 Microfilm Roll Number:34 List Number:705
Source Information: Ancestry.com. New York, 1820-1850 Passenger and Immigration Lists [database on-line]. Provo, UT, USA: The Generations Network, Inc., 2003. Original data: New York. Registers of Vessels Arriving at the Port of New York from Foreign Ports, 1789-1919. Washington, D.C.: National Archives and Records Administration. Micropublication M237, rolls # 1-95.
Also with Hermann were: Johann Knoch, age 57, Miller, from "Sachsen" Anna May Knoch, age 57 Barbara Knoch, age 34 Christian Knoch, (male) age 22
I would be happy to hear from anyone who has a connection to any of these people. Thank you!