It's been a long time since I originally posted this message. I am still searching for any information related to Sidney, Christopher or William Suydam.
My great-grand father was Sidney Suydam (b:abt.1833). He lived in Hopewell, NJ in 1860.
His father was Rev. Christopher Suydam (b: abt. 1799) He married Jemima Blackwell on Sep. 14, 1820.
I believe Christopher was the son of William Suydam (b: abt. 1768)and may have been from East Amwell.
William was married to Elizabeth Dilts.