Alois Senefelder, born November 6, 1771, playwright, actor, connoisseur of girls, inventor of lithography. My pretend boyfriend.
Listen to a podcast about Senefelder and his achievements here: Engines of Our Ingenuity no. 791: Senefelder and Lithography
Read his book here: Alois Senefelder, The Invention of Lithography, at Project Gutenberg
cross posted from my personal weblog