 "Langley Park" refers to the Langley Park estate established in 1923 by the McCormick-Goodhart family in the Chillum District of Prince George's County.The name McCormick-Goodhart represented the linking of one of Chicago's oldest families, that of Cyrus McCormick, with that of British barrister Frederick E. McCormick-Goodhart.Frederick's wife Henrietta (Nettie) was the daughter of Leander J. McCormick, a brother of Cyrus.