Who died on April 20th?

Died on April 20th LISTS {| ! ! ! ! ! | Robert Armstrong
Actor
20-Nov-1890 20-Apr-1973 King Kong Ferdinand Braun
Physicist
6-Jun-1850 20-Apr-1918 Early developer of radio Cantinflas
Actor
12-Aug-1911 20-Apr-1993 Around the World in Eighty Days Paul Celan
Poet
23-Nov-1920 20-Apr-1970 Todesfuge Henry Chadwick
Journalist
5-Oct-1824 20-Apr-1908 Father of baseball Pope Clement V
Religion
c. 1260 20-Apr-1314 Roman Catholic Pope, 1305-14 George Clinton
Military
26-Jul-1739 20-Apr-1812 US Vice President, 1805-12 Eric Harris
Criminal
9-Apr-1981 20-Apr-1999 Columbine Massacre Stanley Hiller, Jr.
Inventor
15-Nov-1924 20-Apr-2006 Helicopter designer Trevor Huddleston
Religion
15-Jun-1913 20-Apr-1998 Anti-Apartheid activist Bernard Katz
Scientist
26-Mar-1911 20-Apr-2003 Neurotransmitters and the pineal gland Dylan Klebold
Criminal
11-Sep-1981 20-Apr-1999 Columbine Massacre Carl Loewe
Composer
30-Nov-1796 20-Apr-1869 German composer of ballads Archibald Macleish
Poet
7-May-1892 20-Apr-1982 Conquistador Steve Marriott
Guitarist
30-Jan-1947 20-Apr-1991 The Small Faces, Humble Pie Sean O'Faolain
Novelist
22-Feb-1900 20-Apr-1991 Come Back to Erin Giuseppe Peano
Mathematician
27-Aug-1858 20-Apr-1932 Infinitesimal calculus Pontiac
Head of State
c. 1720 20-Apr-1769 Chief of the Ottawa Don Siegel
Film Director
26-Oct-1912 20-Apr-1991 Dirty Harry Warren L. Smith
Economist
1914 20-Apr-1972 Council of Economic Advisers, 1968-69 Bram Stoker
Author
8-Nov-1847 20-Apr-1912 Dracula SeƱor Wences
Performance Artist
17-Apr-1896 20-Apr-1999 Ventriloquist Fielding H. Yost
Football
30-Apr-1871 20-Apr-1946 Legendary UMich Head Coach ! ! ! ! ! | |}