Who was born on September 21

160 people with a Wikipedia article were born on September 21, including Bruce Arena, Aslan Maskhadov, Dave Gregory (musician). The list spans every era and every field — art, science, politics, sport, entertainment — ordered by year of birth, from the earliest to the most recent. The six featured people are those most has been written about: the ordering uses the length of their Wikipedia article as an indicator of prominence. For each one you find their occupation, year of birth and a link to the full biography.

53 documented historical events happened on September 21, from antiquity to the present day. The best known is this: Norman invasion of Ireland: English and Irish forces conquered Dublin, forcing Ascall mac Ragnaill, the last Norse–Gaelic king of Dublin, into exile. On the same day, in another year: The Treaty of Arras is promulgated, causing Burgundy to switch sides in the Hundred Years' War. On Almanaccolo every event is listed in chronological order, grouped by century, and links to the Wikipedia article it comes from, so you can always read further or check the source. Alongside the events you find who was born and who died on this date, and which observances are celebrated around the world.