Many famous people are associated with these New Castle County historic places including William Breck, E.I. DuPont, Gen. Richard Mansfield, Father Patrick Kenney, Jonathan Fell and Robert Ashton.
Some of the country's most noteable architects helped create the New Castle County places including Price, William L.,, Stephens, Frank, et al., Light House Establishment, Robert & John MacFarlane, Jeremiah Dixon, John Notman, Charles Mason, Furness & Evans, Robeson Lea Perot and Samuel Canby. Prominent architectural styles found in New Castle Country are Late Victorian, Federal and Greek Revival.