https://en.wikipedia.org/wiki/Filippo_Pacini

Filippo Pacini (25 May 1812 – 9 July 1883) was an Italian anatomist, posthumously famous for isolating the cholera bacterium Vibrio cholerae in 1854, well before Robert Koch's more widely accepted discoveries 30 years later.[1]

Pacini was born in Pistoia, Tuscany, to Francesco, a humble cobbler, and Umilta' Dolfi, but was given a religious education in hopes that he would become a bishop. However, in 1830, he was given a scholarship to the most venerable medical school in Pistoia. He learned his job as a doctor and how to examine and dissect dead bodies under a microscope.

In 1831, during a dissection class, Pacini discovered small sensory organs in the nervous system which can detect pressure and vibrations. He studied them closely from 1833 on, and first discussed them in 1835 at the Società medico-fisica in Florence, but did not publish his research ("Nuovi organi scoperti nel corpo umano") until 1840. Within just a few years, the work was widely known in Europe and the bodies had become known as Pacinian corpuscles.