He represented both Christ Church Priory and the English crown at the 1409 Council of Pisa, though five years earlier he had refused to accept the role of bishop of Rochester, to which he had been elected.
Adolph was only three years old when his father was killed in action against the Ditmarsians in the Battle at Hamme near Heide (today's Schleswig-Holstein), on 4 August 1404.
The song "1404" recalls a 'lost chapter' in Welsh history, when Owain Glyndŵr was crowned Prince of Wales in that year having successfully revolted against the English.
In July 1404, the town of Berzo was destroyed by the Guelphs from the towns of Predore and Adrara San Rocco, which had suffered depredations and looting at the hands of townsmen of Berzo.
The current chief of Clan Mar is Margaret of Mar, 31st Countess of Mar who descends from the Earls of Mar, first creation (1404) (as deemed by Act of Parliament in 1885).
When Engelbert I of Nassau married Johanna van Polanen van der Lekke in 1404, the possession went to the house of Nassau.
Stjepan Vukčić Kosača (1404–1466), Bosnian nobleman of the House of Kosača
Born in Milan, son of Barnabò and Beltramola de' Grassi, Estorre in 1404 had received as its domain the Lordship of Martinengo and Morengo.
In the Owain Glyndŵr Memorial Hall are artifacts associated with the man himself: a copy of the Pennal Letter to King Charles VI of France, a document of 1405 ratifying the terms of a 1404 treaty between Owain and the French, a letter confirming the appointments of Owain's Chancellor, Gruffydd Young and Owain's brother-in-law, John Hanmer as Ambassadors to the French Court, pictures of the Parliament house in Dolgellau, a portrait drawn from Owain's seal, and a replica of this seal.
On 7 May 1404, Pope Boniface IX provided him to a prebend at Lincoln, notwithstanding he already held prebends at Salisbury, Lichfield, St Martins-le-Grand and Abergwyly, and the living of Brington.
Henry III, Count of Schauenburg-Holstein (d. February 1421 in Bordesholm) was Bishop of Osnabrück as Henry I from 1402 to 1410, and also Count of Holstein-Rendsburg from 1404 until his death.
Philip the Bold, Duke of Burgundy as Philip II (1363–1404)
By March 1404, he had taken possession of a number of houses belonging to the duchy in Sawbridgeworth, including purchasing the manor of Shingle Hall from William Wyot in August 1400, and, by 1416, he owned the manor of Thorley.
John of Burgundy (1404 – 27 April 1479), also known as Jean de Bourgogne, was the illegitimate son of John the Fearless, through his mistress Agnes de Croy, daughter of Jean I de Croÿ and was appointed Archbishop of Trier, served as Bishop of Cambrai from 1439–1479, Provost of St. Donatian's Cathedral and St. Peter's Cathedral at Lille.
#Catherine (b. ca. 1344 – d. 10 April 1404/4 October 1405?), Abbess of Trebnitz (1372)
Mary of Lusignan (1381 - 4 September 1404) was the second wife but first Queen consort of King Ladislaus of Naples.
The manuscript was given by the Queen of Cyprus to Innocent VII (1404-1406).
Peace of Raciąż was a treaty signed on 22 May 1404 between Kingdom of Poland, Grand Duchy of Lithuania, and the Teutonic Knights, regarding the control of the Dobrzyń Land and Samogitia.
She was the third daughter of John Mohun, 2nd Baron Mohun (c.1320 – 15 September 1375), and Joan Burghersh (d. 4 October 1404), daughter of Bartholomew de Burghhersh (c.1304 – 3 August 1355), 1st Baron Burghersh, whose mother was Maud de Mortimer.
Peter II of Alençon, called the Noble (1340 – 20 September 1404, Argentan), was the son of Charles II of Alençon and Maria de la Cerda.
Pietro Fregoso (or Campofregoso; 1330 – 22 April 1404) was a politician and statesman who became the 13th Doge of Genoa.
In 1362, Rupert married Anna (d. 1404), a daughter of John of Nassau-Hadamar and Elisabeth of Waldeck.
If it is Albrecht I, who reigned from 1353 to 1404, this would signify that Ringeck was likely a direct associate or student of Liechtenauer.
In October 1404, Langley was elected Bishop of London but the new Pope, Innocent VII, refused to allow his installation and on 2 March 1405 he was appointed Chancellor for the first time.
In 1404-5 he was made a member of the privy council, and was recommended by parliament to Henry IV as one of those whose services merited special recognition; in the same year he was employed on a mission to the Duke of Burgundy.
The oldest known reference to a Thuringian sausage is located in the Thuringian State Archive in Rudolstadt in a transcript of a bill from an Arnstadt convent from the year 1404.
Ulrich V, Lord of Hanau (c. 1370 – 1419), ruling Lord of Hanau from 1380 to 1404
The University of Turin was founded in 1404, and Chambéry was the home of an école préparatoire, a school preparing students to go there.
King Sigismund of Luxemburg laid siege to it in 1404.