Namesakes
Harry Potter Characters:
1 character
Dudley Dursley 
Nobel Prize Winners:
1 chemistry
(chemistry) Dudley R. Herschbach 1986
Notable Actors and Actresses:
1 actor/comedian
Dudley Moore 1935-2002
Notable Athletes:
1 football
(football) LaMarr Woodley (a.k.a. Dudley) 1984-