Record Data Place Unit Type City or Town Containing Unit New Castle County, DE Events Date Type 03/29/1867 Democrat George R. Riddle, one of Delaware's sitting U.S. Senators, dies suddenly in Washington, D.C. Personal People Birthplace of McKennan, Thomas McKean Thompson Riddle, George Read Thomas, Lorenzo Documents Date Title 11/14/1857 Thomas Garrett to William Still, November 14, 1857 12/01/1860 Thomas Garrett to William Still, December 1, 1860 Images New Castle, Delaware, 1861, artist's impression