Wikipedia:Selected anniversaries/May 22
May 22: Victoria Day in Canada (2006)
- 1455 - Forces led by Richard, Duke of York and Richard, Earl of Warwick captured Lancastrian King Henry VI of England, beginning the Wars of the Roses with a Yorkist victory in the First Battle of St Albans.
- 1807 - Former U.S. Vice President Aaron Burr (pictured) was indicted for treason by a grand jury.
- 1915 - Four trains collided near Gretna Green, Scotland, killing 227 people and injuring 246 in the Quintinshill rail crash.
- 1960 - Valdivia, Chile was devastated as the epicenter of the 9.5-magnitude Great Chilean Earthquake, with destructive tsunamis reaching Hilo, Hawaii the following day.
- 1990 - The Yemen Arab Republic and the People's Democratic Republic of Yemen merged to become the Republic of Yemen.