Events in History
- May 2 Empress Maria Theresa signs "Haugwitzschen State reform"
- May 11 British parliament accepts Consolidation Act, to reorganise the Royal Navy
Birthdays in History
- May 15 Levi Lincoln, Sr., American revolutionary, statesman, politician, and acting Governor of Massachusetts (d. 1820)
Edward Jenner
May 17 Edward Jenner, English physician, father of immunology, pioneered smallpox vaccinations, born in Berkeley (d. 1823)

Edward Jenner
Deaths in History
- May 24 Graf Valentin Potocki, Polish nobleman