* 1409 – The University of Leipzig opens.

* 1409 – Western Schism: the Roman Catholic church is led into a double schism as Petros Philargos is crowned Pope Alexander V after the Council of Pisa, joining Pope Gregory XII in Rome and Pope Benedict XII in Avignon.

* 1409 – René I of Naples ( d. 1480 )

* 1465 – Thomas Palaeologus, Byzantine emperor ( b. 1409 )

* 1409 – John II of Alençon, Duke of Alençon and Count of Perche ( d. 1476 )

* 1409 – The Council of Pisa opens.

* 1389 – Isabella of Valois, queen consort of England ( d. 1409 )

After a short-lived period of independence under the Terzi family ( 1404 – 1409 ), Sforza imposed their rule ( 1440 – 1449 ) through their associated families of Pallavicino, Rossi, Sanvitale and Da Correggio.

At the fifteenth session, 5 June 1409, the Council of Pisa deposed the two pontiffs as schismatical, heretical, perjured, and scandalous ; they elected Alexander V ( 1409 – 10 ) later that month.

Pope Gregory XII ( 1406 – 15 ) was questioned about magical practices in 1409 at the Council of Pisa.

Paris 144, 1409 – 1411.

* 1409 – Battle of Kherlen, the second significant victory over Ming China by the Mongols since 1368.

The family also held the seigniory of Pesaro, starting from Muzio Attendolo's second son, Alessandro ( 1409 – 1473 ).

* May 12 – Thomas Palaiologos, claimant to Byzantine throne ( b. 1409 )

* Thomas Palaiologos of Morea ( 1409 – 1465 ), Byzantine Prince and Despot of Morea

* July 10 – King René I of Naples ( b. 1409 )

* May 15 – Charles VIII of Sweden ( b. 1409 )

* November 9 – Edmund Mortimer, English rebel ( d. c. 1409 )

* October 1 – Karl Knutsson, King of Sweden 1448 – 1457, 1464 – 1465 and 1467 – 1470 ( possible date ; his birth may also have been in 1409 ; d. 1470 )

* August 29 – Isabella of Urgell, Duchess of Coimbra ( b. 1409 )

After being conquered by Ladislaus of Naples in 1409, Cortona was sold to the Medici in 1411.

In 1409, Louis liberated Rome from Ladislaus ' occupation ; in 1410, as an ally of the antipope John XXIII he attacked Ladislaus and defeated him at Roccasecca ( 1411 ).

The fleet's third voyage ( Cheng Ho's second ) from 1409 to 1411 consisted of 48 ships and 30, 000 men.

Other medieval works include The Knight of Hungary, or George Grissophan, Provençal, mid-14th C .; the Vision of Louis of France ( Visio Ludovici de Francia ), French, 1358 ; the Vision of Raymond de Perehlos, 1397 ; The Vision of William Staunton, English, after 1409 ; and the Vision of Laurent Rathold de Pasztho, 1411.

He attended fifteen parliaments as knight of the shire for Oxfordshire ( 1400 – 1, 1402, 1405 – 6, 1407, 1409 – 10, 1411, 1413, 1414, 1421, 1422, 1425 – 6, 1427, 1429, 1430 – 1 ) and was Speaker of the House five times, a feat not surpassed until the 18th century.

He married in Soissons on 9 April 1409 Isabelle de Coucy ( d. 1411 ), daughter of Enguerrand VII de Coucy.

The Polish – Lithuanian – Teutonic War or Great War occurred between 1409 and 1411, pitting the allied Kingdom of Poland and Grand Duchy of Lithuania against the Teutonic Knights.

be-x-old: Вялікая вайна 1409 — 1411 гадоў

ru: Великая война ( 1409 — 1411 )

The figure first appears as a literary character in Le Livre du Cuers d ' Amours Espris ( The Book of the Love-Smitten Heart ) attributed to René of Anjou ( 1409 – 1480 ), also known as " Good King René ".

In 1409 he took part in the Council of Pisa, and was one of the supporters of Antipope Alexander V. Later he confirmed his allegiance to another antipope, John XXIII, by whom his family obtained several privileges, while Oddone obtained for himself the vicariate of Todi, Orvieto, Perugia and Umbria.

* John II of Alençon ( 1409 – 1476 )

* John Beaumont, 6th Baron Beaumont ( round 1409 – 1460 ) became Viscount in 1432

* John Beaumont, 1st Viscount Beaumont, 6th Baron Beaumont ( round 1409 – 1460 )

Owain Glyndŵr's forces attacked Builth Castle when it was in the charge of John Oldcastle during the rebellion of Owain Glyndŵr and it was repaired in 1409, the bill being £ 400.

* John Daubeny, 5th Baron Daubeny ( 1394 – 1409 )

* John Daubeny, 5th Baron Daubeny ( 1394 – 1409 )

He married again at Brussels, on 16 July 1409, Elisabeth of Görlitz, duchess of Luxembourg ( November 1390 – 8 August 1451 ), daughter of John, Duke of Görlitz.

They were the parents of John VIII Palaiologos ( 1392 – 1448 ) and Constantine XI Palaiologos ( 1404 – 1453 ), the last Byzantine emperor, as well as the despots of Morea Demetrios Palaiologos ( 1407 – 1470 ) and Thomas Palaiologos ( 1409 – 1465 ).

In 1409 he was appointed to the committee of twelve censors who were commissioned to examine the writings of John Wyclif and determine the heretical ideas they contained.

He was arrested by John the Fearless, Duke of Burgundy, with the hapless Jean de Montaigu ( 1349-1409 ) in 1409, but was soon released and then banished.

In 1409 he took a post for the Duke of Berry as the " master of the boys ", the music teacher and caretaker of the choirboys, at Bourges ; and in 1412 he began his career with the Burgundian court of John the Fearless ( Duke of Burgundy ).

The elder or Kentish line of the Cobhams terminated in an heiress, and she married Sir John Oldcastle, who was summoned to Parliament in right of his wife, as Baron Cobham, in 1409, and who afterwards became famous as the leader of the Lollards.

Coat of arms of the counts of Perche. John II of Alençon ( 2 March 1409, Château d ' Argentan – 8 September 1476, Paris ) was the son of John I of Alençon and his wife Marie of Brittany, Lady of La Guerche ( 1391 – 1446 ), daughter of John V, Duke of Brittany and Joan of Navarre.

In 1409, the castle was given to John Hunyadi's father, Voyk, by Sigismund, king of Hungary, as severance.