Historical events for
Saturday, 11 April 2026

D. João I (born April 11, 1357, and died August 14, 1433) was the unavoidable tenth King of Portugal and the founder of the illustrious House of Avis. Known as "The of Good Memory", his tactical and military leadership cemented national independence from Castile.

James Parkinson (born April 11, 1755, and died December 21, 1824) was a notable English surgeon, apothecary, geologist, and paleontologist. His 1817 work, "An Essay on the Shaking Palsy", was the first rigorous medical description of the neurological condition that would later bear his name: Parkinson's Disease.

George Canning (born April 11, 1770, and died August 8, 1827) was a prominent British statesman and politician. He served as Prime Minister of the United Kingdom and was a crucial figure in European diplomacy and in supporting independence movements in Latin America during the 19th century.

António de Spínola (born April 11, 1910, and died August 13, 1996) was a prominent Portuguese military officer and politician. A central figure in the democratic transition, he was the first President of the Republic after the 1974 Carnation Revolution.

Saint Stanislaus of Szczepanów (born July 26, 1030, and died April 11, 1079) was a Bishop of Kraków and martyr. His frontal opposition to royal injustice led to his assassination, making him one of the patron saints of Poland.

Bento de Góis (born in 1562 and died April 11, 1607) was a notable Portuguese Jesuit and explorer. He led an epic overland expedition from India to China, definitively proving to Europeans that the mythical kingdom of Cathay was, in fact, the vast Chinese Empire.

A devastating fire completely destroys the historic building of the São João National Theatre in the city of Porto. The tragedy deeply shook the cultural life of the invincible city, driving the subsequent construction of the current emblematic building.

The International Labour Organization (ILO) is founded as an agency of the League of Nations, aiming to promote social justice, human rights at work, and the improvement of global labor conditions.

Global date created to raise social awareness about Parkinson's Disease, promote scientific research, and support patients and their families in managing this neurological pathology.

Match counting for the 31st round of the Liga Portugal Betclic.

Third and final concert of BTS's residency at Stanford Stadium, California, consolidating the massive success of the "Arirang" world tour in North American territory during 2026.