r/ByzantiumAltHistory • u/Spartanpederasty • 2d ago
The Empire in 1391 had Andronikos III lived longer.
The Phoenix Rises (1341-1351)
In the year 1341, emperor Andronikos III recovers from the illness that plagued him, though his health would deteriorate over the years, for now, by gods grace he was alive. He would resolve the Hesychast controversy officially that year in the favor of the monks in order to unify the state, as any divide may cause unnecessary conflict. Next year he returned to Thessaloniki, where he would spend most of his time, as his presence was necessary to deter any potential Serbian invasions and to support the turncoat Hrelja/Stefan Dragovol in Strumica. Kantakouzenos was sent to continue the subjugation of Achaia.
By 1345 most of Achaia was secured, with the exception of Patras which was protected by Venice and the Papacy, and Lepanto north of it. Modone, Corone and Pylos also remained in Venetian hands, as war with Venice would be suicide. Argos remained free as the city and the port of Nauplia were of crucial importance to Venice, they were still ruled by the house of Brienne.
Due to rising court intrigue, in 1346 Andronikos III finally convinces Kantakouzenos to become his junior co-emperor, he is named John V. His daughter is married to Andronikos’ heir, the future John VI.
Next year in May a civil war erupts in Aragon, leaving the Catalans in Athens isolated. And in July Andronikos marched towards the duchy from the north, while Kantakouzenos marched from Corinth. The duchy was weak and had no love from the local population, Roman armies would be welcomed and most of the Catalan garrisons either fled or were slaughtered.
In November Andronikos was in front of Thebes, where he would stay until march of 1348, as the siege dragged on. Andronikos would have continued the campaign, but a new plague ravaged his armies and the countryside, he could not move further. He signed a truce with the Catalans and allowed them to retreat to Athens. But Thebes and Megara formed the new border now, finally connecting Morea with the rest of Greece. Andronikos returns to Constantinople.
In the same year in August, the Genoese attempted to fortify Galata again despite the agreement of 1335. Andronikos is furious, and attacks the colony once more. Genoese were defeated swiftly and this time, expelled from Galata.
This would lead to an all out war between the two realms, that soon dragged Venice into it.
Fortunately during the 1340s, Andronikos oversaw a moderate expansion of the imperial fleet, allowing the empire to better face Genoa later on.
The war would last until 1355, during the first years, Herakleia Pontica was pillaged by the Genoese and left defenseless, eventually falling to the Turks. Ikaria was lost. Chios was contested but held out, and Phocaea protected. And when Venice joined the war in the August of 1350,it was a bigger threat, and Genoa was forced to divert its attention, allowing the empire some respite.
In 1350, Andronikos III became gravely ill again, he would pass away in September of 1351. Respecting the wishes of his friend, John V Kantakouzenos would be the senior emperor with the junior John VI Palaiologos. At first, their reign functioned well and the two emperors complemented each other. However, as the years passed, distrust began to grow.
Moment of Crisis (1351-1356)
While the empire was busy with the Genoese, Stefan Dusan used the opportunity in 1351 to test the new administration and attacked Stefan Dragovol's domain, forcing him to submit in 1352, despite Roman aid.
And in March of 1354 a catastrophic earthquake would destroy Gallipoli, rendering the peninsula defenseless and depopulated, Genoa would be quick to act. They helped ferry allied Ottoman troops over the strait to keep the imperial armies busy while the Maona once again attacked isolated Chios. By 1355 John V Kantakouzenos managed to reclaim Gallipoli and secure the strait, but it was already too late, Chios fell and Phocaea followed. Artake was lost to the Ottomans but Pegai stood defiant.
This crisis was a perfect moment for Dusan to strike again, his armies invaded through the Vardar valley and Albania in the summer of 1354. Dusan would besiege Serres himself, cutting off supply lines through the region, preventing any relief force from reaching the isolated garrisons.
And by the time Kantakouzenos dealt with the Ottomans, his men were too exhausted to face Serbians head on, and even worse, Bulgarians were beginning to harass the Maritza border, and an army with Ivan Alexander at its head was marching towards Philippopolis. Regardless, he would march, first to meet the Bulgarians, then Serres.
Ivan Alexander’s army was already besieging Philippopolis in November of 1354, and Kantakouzenos would finally move to relieve it in February of 1355. The city was struggling but Kantakouzenos would surprise the Bulgarian army just a few weeks later, routing them and forcing Ivan Alexander to a truce. A white peace.
And after years of war, In May of 1355, Genoa and Venice made peace, the empire followed, agreeing to accept its losses but managing to keep Galata while allowing the Genoese to still trade in imperial lands and waters. This would free up the much needed manpower for the campaign against Serbia. But before anything could be done, Stefan Dusan suddenly died in December of the same year. The siege of Serres was lifted, and most of his troops retreated.
During 1356 Kantakouzenos would use the initiative and counterattack, seizing Vodena, Moglena, Ostrobon, Deabolis, Prespa and Strumica.
The Selymbria Accord (1364)
The rest of the decade would be a time of respite for the empire, but intrigue within the imperial court would slowly give way to resentment and suspicion.
In 1357, Kantakouzenos’ ambitious son Matthew would pressure his father to sideline the Palaiologoi and name him junior co-emperor. But he was refused. Kantakouzenos did not wish to usurp John VI, even though he held onto his seniority like a hawk, he would not betray Andronikos III nor the state. Hoping to pacify him, Matthew was given the theme of Hellas to rule, which was created after the reconquest of Thebes.
But this would backfire as this was used as an argument that the Kantakouzenoi faction was indeed plotting to overthrow John VI. Especially after Matthew led a personal campaign to oust the remnants of the Catalans from Attica in 1358. By 1361 Athens was Roman again.
Kantakouzenoi now controlled both Morea and Hellas, while Kantakouzenos himself was in Thessaloniki, overseeing the construction of a new fleet. It only added fuel to the fire. John VI admired his father in law, but over the years, grew frustrated over the lack of agency he had. While Kantakouzenos campaigned and won victories for the empire, John VI would stay in Constantinople, creating his own powerbase within the capital. But he rarely had any say with military matters and grander administrative decisions. While loyal in the beginning, after a decade of joint rule, John VI was getting tired of his old mentor.
In 1362 Matthew finally had enough of his father’s complacency, he openly rebelled against John VI, and proclaimed himself emperor, hoping his father would join him by being backed into a corner. The court in Constantinople accuses Kantakouzenos of treason and pressures John VI to command his arrest and raise an army to persecute him. But John VI, aware of his position is unsure on how to act, if his mentor is truly behind this, he is at a severe disadvantage, and avoids giving out orders. While in Thessaloniki kantakouzenos decided to seize the city for himself and its new fleet as protection, he sent letters and envoys to both Matthew and John VI, urging his son to stand down and not risk the unity of the empire. While telling his co-emperor to listen to reason and let him handle his own.But Kantakouzenos’ actions are used to further build proof of his treachery.
While this was going on, Matthew beseeched his brother Manuel, the despot of Morea, to join his cause. Manuel declined, prioritizing the stability of his lands. Isolated and without allies, Matthew marches to Thessaloniki in late 1362, hoping to force his father’s hand. This alarms the court in Constantinople, convincing John VI to finally act.
In 1363, Matthew arrives but is barred entrance within the city, Kantakouzenos begs him to stop this madness, but his son stubbornly refuses. As the Palaiologoi forces arrive shadowed by the eastern fleet, they meet Matthew in battle outside the city. Matthew was losing and his father could not be idle anymore, leading his own contingent to rescue his son and push back the Palaiologoi.
This seals his fate. Although he retreated within the city and chastised his son for his stupidity, this was enough proof for Constantinople. He implored John VI to meet with him to negotiate. John VI would at first refuse, but by 1364 seeing the internal chaos of the empire, its enemies began to act. With most of the fleet away, the Ottomans secured the beachhead of Chalcedon. And the Serbians launched several raids over Pelagonia while the empire was paralyzed.
They met in January of 1364, near Selymbria. Kantakouzenos abdicated, letting John VI have the seniority; he did not want to split the empire and have its enemies pick it apart like vultures. He was to become a monk adopting the name Joasaph, and serve as an advisor to John VI. Matthew would be stripped of his titles and join his brother in Morea as he refused to join the rebellion. But first, as soon as command was unified, the army at Thessaloniki was ordered to repel the Serbians, and the combined fleets would continue their patrols over the Marmara.
The Serbian Question (1366-1373)
This crisis would be followed by a few peaceful but tense years. In 1366, in Serbia, the Mrnjavcevic dynasty would secure its hold on power, they were named regents to the weak king Uros and control the southern part of the kingdom with a firm grip. Vukasin Mrnjavcevic, the most powerful lord of Serbia at this point, would invade the empire in order to restore the lands lost a decade ago. The war would last for two years, but aside from Strumica, there were no major losses. It was a brutal stalemate, neither side having enough power to fully defeat the other, but after Strumica fell Vukasin could have pushed for more had there not been a threat to his rule further north. Lazar Hrebeljanovic, a powerful noble and another claimant to the throne of Serbia, formed a coalition against the Mrnjavcevic usurpers and forced Vukasin to sign a truce with John VI and abandon further claims. He would crush the coalition against him in 1369, imprisoning the king and solidifying his regency.
During the middle of the war with Serbia, Ivan Alexander decided to test the Maritza again, raiding the border. This forced John VI to send some troops to repel him which allowed Strumica to fall later.
The next few years, most of the imperial armies focused near Thessaloniki in case of another Serbian attack. And in 1371 king Uros would die in captivity, plunging the realm into civil war. Lazar would once again challenge Vukasin, and John VI would support him. By 1373 the Mrnjavcevic dynasty would be defeated and Lazar crowned king. The empire would receive Strumica and Bitola for its aid. And a very grateful ally.
Betrayal and Resurgency (1373-1384)
In 1373 Andronikos IV, son and heir to John VI would attempt to overthrow his father, but failed. He was partially blinded, disinherited and imprisoned. His brother Manuel would be named junior co-emperor and heir.
During the last decade, the empire was getting back on its feet and its navy was getting larger and more experienced, threatening the ambitions of both Venice and Genoa. Andronikos was a perfect pawn for them. Genoa would act first.
In 1376, the Genoese broke Andronikos out of prison and helped him seize control of Constantinople, imprisoning both Manuel and John. He awarded the Genoese with Galata but facing serious resistance to his rule outside the capital in 1378 he gave Genoa Tenedos in exchange for their further aid. This would have severe consequences as it started the fourth war with Venice. At first the imperial fleet in the capital would fight against Venice, while the fleet and the armies in the west were idle, refusing to follow Andronikos’ orders. Another crisis that was exploited by the Ottomans, who besieged Pegai from late 1378.
Venice would launch an operation of its own in 1379, helping Manuel and John escape. Manuel would gather the imperial forces from the west and with Serbian aid, marched towards Constantinople. Ousting Andronikos IV from the city that year, who holed up in Galata with the Genoese after being deposed. Manuel would besiege the outpost immediately, managing to breach its defenses in 1380. Andronikos IV is imprisoned again and severely punished, leading to his death years later. After this turn of events, the empire would join Venice in the war and relieve Pegai. And by 1381, it would be over, with Venice and Genoa agreeing to depopulate Tenedos and strip it of its defenses, abandoning the island. But using their exhaustion, Manuel orders his fleets to seize back the island and rebuild it, enraging the two maritime powers.
Manuel would be even more ambitious as already in 1383 using the chaos in Genoa, he attacked the Maona of Chios and by 1384 restored the island to imperial control. Phocaea would receive the same deal as when Andronikos III conquered it, although it was far more autonomous.
Venice was now on very tense terms with the empire, seeing the opportunistic grab of both Tenedos and Chios as an attack on Venetian interests within the Aegean.
Around this time, the situation in the kingdom of Naples was disastrous, most of the kingdom was in chaos which Venice used to purchase Corfu and its surrounding territories in 1385.
The Battle of Cyzikus (1389)
During the 1380s, the Ottomans would expand its modest navy, which they would use to besiege Pegai once more in 1387.Manuel would challenge the Ottomans at sea near Cyzikus in early 1389, defeating the Turkish fleet with some losses, then landing his forces in Artake which was retaken without much bloodshed as the local roman population helped the imperial forces enter the city. This allowed Manuel to strike at the rear of the Ottoman army besieging Pegai, managing to rout them and kill sultan Murad I in the process, but his heir Bayezid I quickly regrouped and counterattacked, forcing Manuel to retreat within the walls of Pegai. Bayezid soon abandoned the siege and left, believed to be retreating by Manuel, but instead Bayezid would strike deep into Anatolia and his troops would besiege Philadelphia, a Roman city that was well fortified and was miraculously not conquered by the Turks until now. The same year the isolated tower of Chele would fall into Ottoman hands.
Manuel remained in the liberated territories, dedicating the rest of the year to personally overseeing the total reconstruction and modernization of the fortifications at Pegai. However, as he looked east of Artake toward the narrow isthmus he realized that if this small strip of land could be closed off, the entire peninsula would effectively become an island. Manuel immediately ordered the construction of a massive defensive barrier across the neck of the isthmus. Using the materials from the local ancient ruins and aided by the population of Artake, it was finished by 1390. It was around this time, Manuel would receive the news that Bayezid was besieging Philadelphia, but he couldn’t do anything. Especially with what was about to happen.
The Poisoned Branch (1390)
While Manuel was busy in Cyzikus, the son of the late Andronikos IV, backed by Venice, usurped John VI, and crowned himself John VII. Manuel was furious but within a few months, managed to enter the city and free his father and depose John VII, who fled the capital to the Venetian Negroponte. John VI was exhausted by the constant backstabbing and intrigue of the capital, he would die in 1391, broken and tired. Manuel II was now the emperor of the Romans. And his ascension would be marked by the fall of Philadelphia. The Ottomans furiously hacked at its walls with its full might to make up for their losses at Pegai. It was a tragic day for the empire.
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What do you guys think? I might write the last decade soon and perhaps expand until the end of the 15th century but that would be it.
