May 3: edit
- 1803 - George Bax Holmes was born.
- 1809 - Laurent-Guillaume de Koninck was born in Leuven, Belgium.
- 1845 - Jan Czerski was born in Verkhnyadzvinsk Raion, Russian Empire.
- 1877 - Franz Nopcsa von Felső-Szilvás was born in Négyfalu, Austria-Hungary.
- 1992 - The Seattle Times ran an article announcing the possible discovery of the first known Diatryma footprint in the Puget Group of Flaming Geyser State Park, Washington state, USA. The track dated back to the Eocene.