The most compelling, if not the most important, event that has ever
happened on an April 13th occurred in 1883 when Alferd* Packer was
convicted of cannibalism--the only person ever to be convicted of
that crime in the United States. Sadly, the trial was not televised.
*Apparently Mr. Packer was really named Alfred but was only semi-literate and spelled his own name as Alferd.
April 13 is the feast day for Saint Ursus of Aosta (invoked against kidney disease and faintness), and several others.
Birthdays today include Thomas Jefferson (1743), Madalyn Murray O'Hair (listed as both 1909 and 1919...God only knows why), Samuel Becket (1906), Eudora Welty (1909), and last but not least...Alfred Butts, the man who invented "Scrabble" (1899).