1668 – Treaty of Aix-la-Chapelle, 1st peace of Aachen: ends War of Devolution, French-Spanish war in The Netherlands
1672 – John Maitland becomes Duke of Lauderdale and Earl of March.
1907 – Jules baron de Trooz forms Belgian government
1969 – British liner Queen Elizabeth II leaves Southampton on maiden voyage to NY
1970 – KOAI (now KNAZ) TV channel 2 in Flagstaff, AZ (NBC) 1st broadcast
1979 – -May 10] Vivekananda (Sri Lanka) begins nonstop ride, cycling 187 hrs, 28 min, around Vihara Maha Devi Park, Colombo, Sri Lanka
1987 – 113th Kentucky Derby: Chris McCarron aboard Alysheba wins in 2:03.4
1994 – Dr Kervokian found innocent on assisting suicides
1995 – Expos bat out of order against Mets in 6th inning
2019 – A clean-up on Mt Everest has removed three metric tons (6,613 pounds) of rubbish and four bodies in just two weeks