According to this view thru Google books of people in NY that were in the Revolutionary War, this shows 12 Van Antwerps.  

The book is called New York In The Revolution As Colony And State.

http://books.google.com/books?id=u-81AQAAMAAJ&pg=PA502&lpg=PA502&dq=%22van+Antwerp%22&source=bl&ots=RP82izw6Bb&sig=tXh5tqzDy6iqzu4bho6viCXLuPA&hl=en&sa=X&ei=ALtGUqnGMvL_4AOKj4Bo&ved=0CGIQ6AEwCTiMAQ#v=onepage&q=%22van%20Antwerp%22&f=false 

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