Officers: prévôtés, bailiwicks, seneschals · The Byzantine Empire (the Empire of the Romans) · as at first light, 1 January 1200

Thrakesion

John II re-established the Thrakesion as a smaller province under a doux based at Philadelphia, the military base of the west; its southern part went to the new province of Mylasa and Melanoudion.

It holds the rich valleys of the Hermos and the Kaystros and the coast from Phocaea to Ephesus: Smyrna (Smyrna), Ephesus (Ephesus), Magnesia, Nymphaion, Sardis and Thyateira (Akhisar). Philadelphia itself is a city of strong notables: Theodore Mangaphas made himself emperor there about 1188-1189 (Philadelphia). Basil Vatatzes, who governed the theme about 1189-1193, drove him out.

On 1 January 1200 the doux is not named; the province is imperial and quiet, but the eastern edge toward the plateau (Kula, the upper Kogamos) faces the Turks, with whom a peace is only negotiated during 1200.

Who he is

Title
Doux of the Thrakesion, seated at Philadelphia
Since
not pinned
Born
not pinned
Family
not pinned
Confidence
low

Known holders: Giphardos (1160s); Basil Vatatzes, domestic of the East and doux of the Thrakesion (about 1189-1193), who had Mangaphas banished from Philadelphia and was killed near Arkadiopolis in 1194 (Choniates); Basil Chrysomalles (after 1204). None is named for 1 January 1200.

Overlord

The emperor Alexios III Angelos (Byzantium).

What it holds

How it was acquired

Re-established by John II (1118-1143).

Allies and rivals

Faces the Seljuk sultan and the Turkmen of the plateau; local magnates at Philadelphia.

How things stand that morning

Imperial. Relations with Sultan Rukn al-Din Suleymanshah II are unsettled: peace talks run during 1200 and an accord is made in August (Choniates).

Wealth

Grain, wine, oil and figs of the Hermos and Kaystros valleys; the ports of Smyrna, Phocaea and Ephesus.

Military

The garrison and walls of Philadelphia, the citadels of Smyrna, Sardis and Magnesia; no figures.

Threats

  • Turkish raids from the plateau
  • Local separatism at Philadelphia

What the year holds

What happened next, if nothing in play changes it. Each event carries what it depends on and what would stop it.

  1. after August 1200The accord with Rukn al-Din breaks and Turkish raids resume against the eastern cities (Choniates).Depends on: the emperor's murder plot being exposed. Stopped by: the accord holding.

Where the sources disagree

Evidence: The theme's history is known in outline; no doux is named for 1199-1200.

On the map: Province bounds reconstructed; the eastern edge is a frontier zone.

Primary sources for Byzantium

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

  • Chronicle of Alberic of Trois-Fontaines, Alberic of Trois-Fontaines (about 1227 to 1241, at the Cistercian abbey of Trois-Fontaines in Champagne). The widest net of any Latin chronicle for 1200, compiled from dozens of sources, many now lost. Read online
  • History of Niketas Choniates, Niketas Choniates (about 1185 to 1217, in stages, with a final revision in exile at Nicaea after 1204). The central narrative for the Byzantine Empire under Alexios III Angelos: the Bulgarian and Vlach war under Kaloyan, the breakaway of Ivanko in the Rhodopes and his capture by treachery in 1200, Dobromir Chrysos at Prosek and Strumica and the emperor's campaign and settlement with him, the Cuman raids into Thrace, John Komnenos the Fat's one-day revolt at Constantinople on 31 July 1200, the loosening of imperial control in the provinces and the rise of Leo Sgouros, and the court's fiscal abuses. Read online
  • The Capture of Constantinople, Gunther of Pairis (about 1205 to 1210). Written at the Cistercian abbey of Pairis in Alsace from the account of its abbot Martin, who preached the crusade at Basel in 1200 (Gunther gives the sermon) and led a contingent from the Upper Rhine. Read online
  • The Conquest of Constantinople, Robert de Clari, knight of Picardy (about 1205 to 1216). A rank-and-file crusader's account that begins with the preaching of the crusade and the taking of the cross in 1199 to 1200 by the counts of Flanders, Blois and Champagne and by the Picard lords, among them Peter of Amiens, Robert's own lord, then the negotiations with Venice. Read online
  • The Palace Revolution of John Komnenos (31 July 1200), Nicholas Mesarites (1200 or soon after). An eyewitness narrative of the one-day coup of John Komnenos the Fat at Constantinople on 31 July 1200: the crowning of the usurper in Hagia Sophia, the mob's plunder of the Great Palace, the stand of the palace clergy and the guard at the church of the Virgin of the Pharos, where Mesarites was skeuophylax, and the recovery of the palace by Alexios III's men that night. Read online
  • History of the doges of Venice (about 1229, with a continuation). The earliest surviving Venetian narrative close to the events. Read online
  • The Conquest of Constantinople (Villehardouin), Geoffrey of Villehardouin (about 1207 to 1213). Opens with the preaching of Fulk of Neuilly and the tournament at Ecry (28 November 1199) where Theobald III of Champagne and Louis of Blois took the cross, then the taking of the cross by Baldwin of Flanders, Hugh of Saint-Pol, Geoffrey of Perche and others through early 1200, the assemblies at Soissons and Compiegne in 1200, and the six envoys sent to Venice in the winter of 1200 to 1201. Read online
  • The History of the Seljuks of Rum, Ibn Bibi (Nasir al-Din Husayn ibn Muhammad) (about 1281 to 1285, at Konya). The main Seljuk narrative for Rum begins with Kilij Arslan II's partition of the sultanate among his sons and his death (1192), Kaykhusraw I's first reign at Konya, his deposition in 1196 to 1197 by Rukn al-Din Sulayman II, Kaykhusraw's wanderings to Cilician Armenia, Aleppo and Constantinople, Sulayman's reduction of his brothers' towns (Tokat, Malatya, Amasya, and Ankara by 1204) and his Erzurum and Georgian campaigns. Read online

7 more in the sources library for The Balkans and Byzantium.

Sources and studies

  1. Wikipedia: Thracesian Theme
  2. Wikipedia: Theodore Mangaphas (after the ODB, Beihammer 2011 and Peacock 2014)
  3. Niketas Choniates, History, trans. H. J. Magoulias, O City of Byzantium (Detroit 1984): the reigns of Isaac II and Alexios III, read through the archive.org search of the scan

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.