When Marcus died in 180 the throne passed to his son Commodus, who had been elevated to the rank of co-emperor in 177.

Al-Mansur Salah ad-Din Muhammad ibn Hajji ibn Muhammad ibn Qalawun (1347/48–1398), better known as al-Mansur Muhammad, was the Mamluk sultan in 1361–1363.

St Patrick's Day, while not a legal holiday in the United States, is nonetheless widely recognized and observed throughout the country as a celebration of Irish and Irish-American culture. Celebrations include prominent displays of the color green, religious observances, numerous parades, and copious consumption of alcohol. The holiday has been celebrated in what is now the U.S since 1601.

The island of Montserrat is known as the "Emerald Island of the Caribbean" because of its founding by Irish refugees from Saint Kitts and Nevis. Montserrat is one of three places where St Patrick's Day is a public holiday, along with Ireland and the Canadian province of Newfoundland & Labrador. The holiday in Montserrat also commemorates a failed slave uprising that occurred on 17 March 1768.

One of the longest-running and largest St Patrick's Day parades in North America occurs each year in Montreal, whose city flag includes a shamrock in its lower-right quadrant. The yearly celebration has been organized by the United Irish Societies of Montreal since 1929. The parade has been held yearly without interruption since 1824. St Patrick's Day itself, however, has been celebrated in Montreal since as far back as 1759 by Irish soldiers in the Montreal Garrison following the British conquest of New France.