Although a Franco-Scottish army was successful at the Battle of Baugé ( 1421 ), the humiliating defeats of Poitiers ( 1356 ) and Agincourt ( 1415 ) forced the French nobility to realise they could not stand just as armoured knights without an organised army.

Mehmed I Çelebi ( Ottoman: چلبی محمد, Mehmed I or Mehmed Çelebi ) ( 1390, Bursa – May 26, 1421, Edirne, Ottoman Empire ) was a Sultan of the Ottoman Empire ( Rûm ) from 1413 to 1421.

Murat ) was the Sultan of the Ottoman Empire from 1421 to 1451 ( except for a period from 1444 to 1446 when his son Mehmed II reigned ).

* Maredudd, whose date of birth is unknown, was still living in 1421 when he accepted a pardon.

Year 1421 ( MCDXXI ) was a common year starting on Wednesday ( link will display the full calendar ) of the Julian calendar.

The forced baptism of Jewish children was stopped on intervention by Pope Martin V. On 12 March 1421 Albert sentenced the remaining Jews to death.

In 1421, at age 8, Frederick was betrothed to Princess Jadwiga of Lithuania, but she died on 8 December 1431, before the marriage could take place, purportedly poisoned by her stepmother Sophia of Halshany.

In 1421, the Bohemian Diet declared Sigismund deposed and formally offered the crown to Władysław on condition he accept the religious principles of the Four Articles of Prague, which he was not prepared to do.

Henry VI ( 6 December 1421 – 21 May 1471 ) was King of England from 1422 to 1461 and again from 1470 to 1471, and disputed King of France from 1422 to 1453.

Henry was the only child and heir of King Henry V. He was born on 6 December 1421 at Windsor Castle, and succeeded to the throne at the age of nine months as King of England on 31 August 1422 when his father died, thus making him the youngest person ever to succeed to the English throne.

Catherine went to England with her new husband and was crowned queen in Westminster Abbey on 23 February 1421.

By this time, Catherine was several months pregnant and gave birth to Prince Henry on 6 December 1421 at Windsor.

Owen was probably born in about 1400, and may have gone to war in the service of Henry V's steward Sir Walter Hungerford in 1421 in France.

Bayreuth was first published on a map in 1421.

This was the Second St. Elizabeth's Flood: see Sint-Elisabethsvloed ( 1421 ).

Despite being a moneylender himself he was sufficiently trusted and respected to sit as a judge in usury trials in 1421.

From 1421, Archibald, Earl of Douglas had been in regular contact with James and they formed an alliance that was to prove pivotal in 1423.

In September 1421 Oswald was lured by his lover Anna Hausmann into a trap and apprehended by Martin Jäger, who brought Oswald to Innsbruck and handed him over to Count Friedrich.

The second marriage, arranged by his father Manuel II and Pope Martin V, was to Sophia of Montferrat in 1421.

However, two events in 1421 broke his confidence: he was forced, to his great shame, to withdraw from battle against Henry V of England ; and his parents then repudiated him as the legitimate heir to the throne, claiming that he was the product of one of his mother's extramarital affairs ( for which she was notorious ).

The position was created again, but its holder died without heirs in 1421, and the post has since been left vacant.

Due to his influence, in 1421 the Pope sent Antionio Zeno to investigate the Teutonic Order and its activities.

According to the manuscript of Jena, a certain Giacomo Colonna found the letter in 1421 in an ancient Roman document sent to Rome from Constantinople.

* The Cathedral ( built in 1421, but restored to the current appearance in the 18th century by Giovanni Biagio Amico ).

Manuel II stood on friendly terms with the victor in the Ottoman civil war, Mehmed I ( 1402 – 1421 ), but his attempts to meddle in the next contested succession led to a new assault on Constantinople by Murad II ( 1421 – 1451 ) in 1422.

These works are the Beardless Prophet ; Bearded Prophet ( both from 1415 ); the Sacrifice of Isaac ( 1421 ); Habbakuk ( 1423 – 1425 ); and Jeremiah ( 1423 – 1426 ); which follow the classical models for orators and are characterized by strong portrait details.

Together with the Khan claimant Dawlat Berdi, they were beaten by Baraq of the Uzbeks in 1421.

Accounts date the construction of the castle to the year 1421 when Sir John Wemyss decided to build a fortified castle to replace one destroyed by the Duke of Rothesay at Kilconquhar in 1402.

In 1422 a Commission of Sewers was appointed to restore the banks and drainage between Fletching and the coast, which may indicate that the Ouse was affected by the same storm that devastated the Netherlands in the St Elizabeth's flood of 1421.

From a total Alpine production of 1421 in 1972, the numbers of cars sold dropped to 957 in 1974 and the company was bailed out via a takeover by Renault.

In 1421, Egypt was attacked by the Kingdom of Cyprus, but the Egyptians forced the Cypriotes to acknowledge the suzerainty of the Egyptian sultan Barsbay.

In 1262, Namur fell into the hands of the Count of Flanders, and was purchased by Duke Philip the Good of Burgundy in 1421.

Andrea del Castagno ( or Andrea di Bartolo di Bargilla ) ( c. 1421 – 19 August 1457 ) was an Italian painter from Florence, influenced chiefly by Tommaso Masaccio and Giotto di Bondone.

He was knighted by Henry V on 22 Apr 1421.

For instance, Michael I ( 1418 – 1420 ) was overthrown by his cousin, Dan II ( 1420 – 1431 ), and in the next decade the throne was occupied with frequent changes either by Dan II or by his cousin, Radu II the Bald ( 1421 – 1427 ), the former being supported by Sigismund I of Hungary and the latter by the Ottomans.

Over the next five years he held various important commands with the English forces in France, until he was captured by the French in 1421 at the Battle of Baugé.

The expulsion of Jews from England ( 1290 ), France ( 1391 ), Austria ( 1421 ) and Spain ( the Alhambra decree of 1492 ) were seen by many as a sign of approaching redemption and contributed greatly to the messianic spirit of the time.

He claims that from 1421 to 1423, during the Ming Dynasty of China under Emperor Zhu Di ( 朱棣 ) the fleets of Admiral Zheng He ( 鄭和 ), commanded by the Chinese captains Zhou Wen ( 周聞 ), Zhou Man ( 周滿 ), Yang Qing ( 楊慶 ), and Hong Bao ( 洪保 ), discovered Australia, New Zealand, the Americas, Antarctica, and the Northeast Passage ; circumnavigated Greenland, tried to reach the North and South Poles, and circumnavigated the world before Ferdinand Magellan.

* 1421 – King Henry VI of England ( d. 1471 )

* 1421 – Thomas of Lancaster, 1st Duke of Clarence, second son of Henry IV of England ( b. 1388 )

* 1461 – Henry Percy, 3rd Earl of Northumberland, English politician ( b. 1421 )

** Thomas of Lancaster, 1st Duke of Clarence, second son of Henry IV of England ( d. 1421 )

* May 21 – King Henry VI of England ( murdered in prison ) ( b. 1421 )

* September 29 – Thomas of Lancaster, 1st Duke of Clarence, second son of Henry IV of England ( d. 1421 )

** Henry Percy, 3rd Earl of Northumberland ( in battle ) ( b. 1421 )

In June 1421, Henry returned to France to continue his military campaigns.

* John, Duke of Bedford and Humphrey, Duke of Gloucester were ( 5 December 1422 – 6 November 1429 ) jointly Protectors for Henry VI ( 1421 – 1471 )

Henry appointed the Duke of Bedford and James as the joint commanders of the siege of Dreux on 18 July 1421 and on 20 August they received the surrender of the garrison.

* Henry VI of England ( 1421 – 1471 )

* Thomas of Lancaster, 1st Duke of Clarence ( 1388 – 1421 ), second son of Henry IV Bolingbroke, died without male issue

He crowned Katherine at Westminster ( 20 February 1421 ), and on 6 December baptized her child Henry VI.

Unfortunately, this reckless manner of dealing with evidence is typical of 1421, vitiating all its extraordinary claims: the voyages it describes never took place, Chinese information never reached Prince Henry and Columbus, and there is no evidence of the Ming fleets in newly discovered lands.

* Henry Percy, 3rd Earl of Northumberland ( 1421 – 1461 ), ( forfeit 1461 ), son of Henry 2nd

Henry Percy, 3rd Earl of Northumberland ( 25 July 1421 – 29 March 1461 ) was the son of Henry Percy, 2nd Earl of Northumberland and Lady Eleanor Neville, daughter of Ralph Neville, 1st Earl of Westmorland and his second wife Joan Beaufort.