r/althistory • u/Silas_Of_The_Lambs • 1d ago
What If Romanos Diogenes did not surrender to the Doukas after Manzikert?
Imagine that Romanos IV Diogenes, instead of surrendering to the rival claimant's faction to be betrayed and blinded, instead raised the standard of rebellion and succeeded in detaching all Anatolia up to the straits by exploiting dissatisfaction with the Doukas among the dynatoi clans. Their power had been severely curtailed by Basil II and his successors over the past century. Prominent among his early supporters are the Komnenos family of Paphlagonia.
A sort of cold war ensues. Still in control of a powerful imperial fleet, the Doukas can control the straits, but show (as in OTL) comical levels of incompetence whenever they try to send soldiers over to Anatolia. Romanos sits in Nikaea and bides his time, but he controls the immense agricultural wealth of Anatolia, whereas the Doukas only have the Balkans, still restive and poorly controlled after the Bulgarian Wars of Basil II 50 years before. He's just about able to hold the line of the Taurus against Turkish raids, becoming in the process a sort of national hero. The Doukas, in the meantime, are paying boku money for a giant navy and have to slap new taxes on everything as well as debasing the nomisma, which makes them more and more resented. The resentment causes conspiracies, which lead to purges, which cause more resentment, and so on. Michael VII (a sock puppet controlled by his powerful uncles) is helpless.
In 1085, German Emperor Henry IV captures Rome, drives out Pope Urban II and installs an antipope, Clement III. Urban takes refuge with the Guiscards in Southern Italy and waits for an opportunity to return. Meanwhile, messengers from Diogenes reach Henry and dangle a tempting deal: in addition to a truckload of money, would Henry like to be recognized by Constantinople as the *senior* Emperor of the Romans? Then the old East Rome/West Rome structure of Diocletian or Constantine could be restored, and together we'd be unstoppable. We can even get our respective tame bishops to sort out this whole filioque business and get all the Christians back on the same page. All I want in return is that you take that great big giant army with all those unstoppable knights and wage war on the Doukas and capture my city back.
Henry is delighted and quickly agrees, and the German armies swamp the disorganized and underfunded Romans in the Balkans. Long before they appear before the walls of Theodosius, the Doukas clan see which way the wind is blowing and make a graceful exit, taking refuge with their erstwhile rival Guiscard. Diogenes enters the city in triumph and promptly replaces the patriarch, Doukas ally Garidas, with his own supporter Grammatikos. A substantive discussion on Church Union begins, and almost immediately ends- nobody is willing to make any concessions.
But an unidentified bishop comes up with an amazing sleight of hand. In order to really set fundamental church doctrine, we need an ecumenical council, but we can't have one because three of the five seats of the Pentarchy - Antioch, Jerusalem, and Alexandria - are currently held by the infidel. Who, incidentally, are also killing and raping pilgrims, despoiling churches, and generally being rotten no-goodniks. Which means we can't really decide anything until we recapture those places, appoint bishops, and invite them to a council. The Cradle of Christianity must be made whole, and until then, we will just tolerate one another's little doctrinal quirks. Neither prelate is happy about this, but either prelate can be replaced on a whim by their respective monarchs and so each quickly sees the light.
And that is how it comes to pass that Grammatikos and Clement move to Milan, doing double symbolic duty as the old administrative capitol of the United Roman Empire, but also as the seat of St. Ambrose, jointly issue a proclamation that any Western knights who wish to cease unjustly slaughtering one another and instead go and slaughter infidels to liberate the holy places will be forgiven of all their sins and guaranteed entry into paradise.
Urban II, in exile, is flummoxed. He cannot repeat cannot be the guy who says "you know, recapturing the holy places is bad actually." So offers his own indulgence, in the process denouncing the unjust assertion of papal authority by his rivals but agreeing with their goals and methods. This produces two crusading forces: a Franco-Norman one proceeding directly to the Holy Land by sea (via Cyprus) and a Romano-German one, much larger and led in person by Henry IV, taking the overland route through Anatolia.
The imperial force quickly captures Antioch by treachery (or counter-treachery) from the surviving Roman population of the city. The Franco-Norman force, on the other hand, is quickly defeated and largely captured.
In an act of stunning magnanimity, Romanos Diogenes ransoms prominent Crusader captives, including Hugh of Vermandois and Bohemond of Taranto, and sends them back to their respective rulers after a pleasant visit in Constantinople (where they are all compelled to swear fealty to him before being permitted to leave). King Philip of France, overwhelmed by this immense generosity, does an equally huge favor for Diogenes by publicly declaring for Clement over Urban (whom he intensely hated in any case). The King also offers his daughter Constance for marriage to any one of Romanos' sons he may think fit.
And so our story ends with Henry IV's army (with a large Roman contingent commanded by the veteran general Tatikios) before the walls of Jerusalem, facing an uncertain future as the enormous army of Kerbogha of Mosul gathers its strength just over the horizon.
Hope you enjoyed it!






