Theodor Escherich was born on 29 November 1857 in Ansbach, Mittelfranken, Germany. This German-Austrian pediatrician's claim to fame was the discovery of the Escherichia coli bacterium. E.coli, as it is more commonly known, was named after Dr. Escherich.
The pediatrician was driven by a belief that many of the ailments suffered by children could be solved by studying bacteriology. He discovered E.coli in 1885 whilst on the hunt of the cause of fatal intestinal diseases in children. He studied infant feces for the causative organism and amongst his inventory of microbes was a quick-growing rod-shaped bacterium he called Bacillus communis coli. It was named E.coli after his death.