The Ottoman sultan Bayezid I built the Bayezid Külliyesi ( Bayezid I theological complex ) in Bursa between 1390 and 1395 and the Ulu Cami ( Great Mosque ) between 1396 and 1400.

In 1390, Bayezid took as a wife Princess Olivera Despina, the daughter of Prince Lazar of Serbia, who also lost his life in Kosovo.

Lazar's young and weak successor Stefan Lazarevic ( 1389 – 1427 ) concluded a vassal agreement with Bayezid in 1390 to counter Hungarian moves into northern Serbia, while Vuk Brankovic, the last independent Serb prince, held out until 1392.

Philadelphia was an independent, neutral city under the influence of the Latin Knights of Rhodes, when taken in 1390 by Sultan Bayezid I and an auxiliary Christian force under the Byzantine emperor Manuel II after a prolonged resistance, by which time all the other cities of Asia Minor had surrendered to the Ottomans.

Among the Turkmen leaders the Ottomans emerged as great power under Osman and his son Orhan I. Smyrna was conquered in 1330 AD, and the last Byzantine possession, Philadélphia ( modern Alaşehir ), fell in 1390 AD.

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.

* 1390 – King John I of Castile ( b. 1358 )

* 1390 – John I, Duke of Lorraine ( b. 1346 )

# Count Palatine Otto I of Mosbach ( 24 August 1390, Mosbach – 5 July 1461 )

* August 24 – King John I of Castile ( d. 1390 )

After him came Kadashman-Enlil I ( 1390 BC-1375 BC ) and Burna-Buriash II ( 1375 BC-1347 BC ), who corresponded with the Egyptian rulers Amenhotep III and Amenhotep IV ( Akhenaton ) for the purposes of marriage and trade.

Cresques ' work was highly sought after ; in 1390 John I of Aragon paid the princely sum of 60 livres and 8 sous for one of his maps.

* alt = 1390 – 1404: Count of Charolais as Philip I

* John I, Duke of Lorraine ( 1346 – 1390 )

* John I of Castile ( 1358 – 1390 )

However by the reign of Eriba-Adad I ( 1390 BC-1366 BC ) Mitanni influence over Assyria was on the wane.

After the sack of Assur, Assyria may have paid tribute to Mitanni up to the time of Eriba-Adad I ( 1390 BC-1366 BC ).

By the reign of Eriba-Adad I ( 1390 BC-1366 BC ) Mitanni influence over Assyria was on the wane.

In May 1390 parliament granted John permission to change his regnal name to Robert, probably in part to maintain the link back to Robert I but also to disassociate himself from King John Balliol.

John I ( in Spanish: Juan I ) ( 24 August 1358 – 9 October 1390 ) king of the Crown of Castile, was the son of Henry II and of his wife Juana Manuel of Castile, daughter of Juan Manuel, Prince of Villena, who was a scion of a more recent branch of the royal house of Castile.

Henry III KG ( 4 October 1379 – 25 December 1406 ), sometimes known as Henry the Sufferer or Henry the Infirm (, ), was the son of John I and Eleanor of Aragon, and succeeded him as King of the Castilian Crown in 1390.

* John I ( 1358 – 1390 )

Martin I of Sicily ( c. 1374 / 1376 – 25 July 1409 ), called " The Younger ", was King of Sicily from 1390 to 1409.

The Catalan rule was to last uninterruptedly until 1388 – 1390 when they were defeated by the Navarrese Company under Pedro de San Superano, Juan de Urtubia, and allied with the Florentines under Nerio I Acciaioli of Corinth.

Dobruja was occupied by Mircea I of Wallachia in 1390 and by the Ottomans in 1395.

King Robert II of Scotland ( 1316 – 1390 ) had a hunting lodge in the area.

AM radio stations in the area are WEOK-AM 1390 ( Oldies ), WGNY-1220 ( 50's & 60's music ), WHVW-950 ( 50's and older blues and country ), WKIP-1450 ( talk radio ).

Radiocarbon dating on postholes and pits in the area show activity from 1690 to 1390, 1319 to 1214, and 977 to 899 BC.

After their victory at the Battle of Kosovo in 1389, the Ottomans had conquered most of the Balkans, and had reduced the Byzantine Empire to the area immediately surrounding Constantinople, which they later proceeded to besiege ( in 1390, 1395, 1397, 1400, 1422 and finally conquering the Byzantine capital in 1453 ).

By then, the station played Top-40 programming with a format similar to WABC and WMCA in New York City and CKLW in Detroit, and was the most popular such station in the Washington area, rivaled only by WEAM ( 1390 ; now WZHF ).

* Holstein-Kiel, branch county between 1261 and 1390, partitioned from Holstein, in 1273 Holstein-Segeberg ( first ) was partitioned from Holstein-Kiel, but reverted in 1308, but then lost to Holstein-Pinneberg, Holstein-Plön and Holstein-Rendsburg in 1316 ; Holstein-Kiel acquired Holstein-Plön in 1350, and merged itself into Holstein-Rendsburg

* Holstein-Plön, branch county between 1290 and 1390, partitioned from Holstein-Itzehoe, acquired a share of Holstein-Segeberg in 1316, merged into Holstein-Kiel

Holstein on the other hand, after the death of Adolphus IV in 1261, was split up into several countships by his sons and again by his grandsons ( 1290 ): the lines of Holstein-Kiel ( 1261 – 1390 ), Holstein-Pinneberg and Schaumburg ( 1290 – 1640 ) south of the Elbe, Holstein-Plön ( 1290 – 1350 ), Holstein-Rendsburg ( 1290 – 1459 ), and at times also Holstein-Itzehoe ( 1261 – 1290 ) and Holstein-Segeberg ( 1273 – 1315 ), and again 1397 – 1403 ), all named after the comital residential cities.

Following the Battle of Otterburn in 1390, it ceased to be a royal stronghold and instead fell into the possession of five successive families-Preston, Meldrum, Seton, Gordon and Leith-each of whom added a new tower to the castle.

Excepted was the land of Neustettin, which was to be ruled by his brother Wartislaw V, and was integrated into Bogislaw's part-duchy only after his death in 1390.

On his way back to Moscow, Dionysius stopped in Kiev, where he was detained by the Kievan prince Vladimir Olgerdovich at the insistence of Cyprian, Archbishop of Kiev, who was to have succeeded as Metropolitan of Moscow in 1378 upon the death of Alexius, but who was not finally welcomed into Moscow until 1390.

His sons held the region until 1390, when the first incorporation of their lands into the expanding Ottoman state took place.

The latter became extinct in 1390, its lands passing later to Brandenburg, while the former was divided into several branches, only two of which, however, Hohenlohe-Weikersheim and Hohenlohe-Uffenheim-Speckfeld, need be mentioned here.

In 1390, Muğla was taken over by the Ottoman Empire.

Lazar's widow, Milica, who ruled as regent for her minor son Stefan Lazarević, Lazar's successor, accepted Ottoman suzerainty in the summer of 1390.

When Turkish forces, moving toward Hungary, reached the borders of Moravian Serbia in the summer of 1390, Milica accepted Ottoman suzerainty.

Timur had conquered Georgia and Azerbaijan in 1390, expanding his empire to the borders of the Ottoman Empire.

Manuel III ( 1390 – 1417 ), who succeeded his father Alexios III as emperor, allied himself with Timur, and benefited from Timur's defeat of the Ottoman Turks at the Battle of Ankara in 1402.

Sometime after the battle, in 1390 or 1391, Serbia became a vassal Ottoman state, so Stefan Lazarević was obliged to participate in battles if ordered by the Ottoman sultan.