Births on May 9

Adam Opel, German engineer, founded the Opel Company (d. 1895)

Adam Opel (9 May 1837 – 8 September 1895) was the founder of the German automobile company Adam Opel AG.

24 Mar

Black Canadians
Canada gives African Canadian men the right to vote.
7 Nov

Elijah P. Lovejoy
In Alton, Illinois, abolitionist printer Elijah P. Lovejoy is shot dead by a mob while attempting to protect his printing shop from being destroyed a third time.
8 Nov

Mount Holyoke College
Mary Lyon founds Mount Holyoke Female Seminary, which later becomes Mount Holyoke College.
22 Nov

Upper Canada Rebellion
Canadian journalist and politician William Lyon Mackenzie calls for a rebellion against the United Kingdom in his essay "To the People of Upper Canada", published in his newspaper The Constitution.
25 Dec

Battle of Lake Okeechobee
Second Seminole War: American general Zachary Taylor leads 1100 troops against the Seminoles at the Battle of Lake Okeechobee.