1 5 – 1 8 7 7 ), ▁author , ▁advent urer , ▁fil ib uster , ▁general . ▁David ▁Her old , ▁( 1 8 4 2 – 1 8 6 5 ), ▁consp ir ator ▁of ▁the ▁Abraham ▁Lincoln ▁assass ination ▁J . ▁Ed gar ▁Ho over , ▁( 1 8 9 5 – 1 9 7 2 ), ▁F BI ▁Director ▁Robert son ▁Howard , ▁( 1 8 4 7 – 1 8 9 9 ), ▁att orney , ▁editor ▁for ▁West ▁Publishing , ▁and ▁founder ▁of ▁Pi ▁K appa ▁Al pha ▁frat ern ity ▁Andrew ▁A . ▁Hum ph re ys , ▁( 1 8 1 0 – 1 8 8 3 ), ▁Army ▁Engine er , ▁Civil ▁War ▁general , ▁prominent ▁scient ist ▁Samuel ▁Hum ph re ys , ▁( 1 7 7 8 – 1 8 4 6 ), ▁naval ▁architect ▁known ▁as ▁Chief ▁Con structor ▁of ▁the ▁Navy ▁Ad ela ide ▁Johnson , ▁( 1 8 5 9 – 1 9 5 5 ), ▁sculpt or , ▁social ▁reform er ▁Hor atio ▁King , ▁( 1 8 1 1 – 1 8 9 7 ), ▁U . S . ▁Post master ▁General ▁A lain ▁Le Ro y ▁Lock e ▁( 1 8 8 5 – 1 9 5 4 ), ▁intellectual ▁co - found er ▁of ▁the ▁Har lem ▁Renaissance , ▁chair ▁of ▁the ▁Department ▁of ▁Philosoph y ▁at ▁Howard ▁University , ▁and ▁the ▁first ▁African ▁American ▁Rh odes ▁scholar ▁Bel va ▁Ann ▁Lock wood ,