Rota Fortunae
The Emperor holds Court in Pavia
Filippo Maria's intervention in Thessalonika was not done for charity. Since the Crusade Greece itself had passed under Visconti jurisdiction as Papal vicar of Greece; now Bulgaria and Illyria were likewise made subject to Milan. The latter predictably annoyed the Habsburgs of Austria-Hungary, but as the bulk of Illyria was owned either by the Visconti or by their Venetian clients they had little recourse. The Venetians were almost as upset but gave no complaint, recognizing that this was intended to give the Emperor another lever to enforce their cooperation. In truth although Filippo Maria claimed Albania the Illyrian Slavs took their cues not from Vienna or Milan nor even from Rome but from Venice. The coastal cities had been annexed into the Republic and the hinterland was under heavy Venetian influence. Venice recruited heavily from Slavic populations of the Adriatic littoral- Albanian
Stratioti were second only to Croats from Dalmatia in their representation among the Republic's military- and several princes had even secured sinecures in the Republic itself beyond mere mercenaries. The famous Skanderbeg and his family were made Citizens of the Republic in 1440, a rare honor but not one unique to that family.
As the Byzantine Empire collapsed into civil war the Western Empire faced its own calamity: Emperor Filippo Maria Visconti, the Grand Signore of Naples, was dying. By 1450 he was 57 years old, and the demands of his office- as first king, then regent, and finally Emperor- weighed ever more heavily upon him. Heaviest of all was the death of both his daughter Valentina and her infant son Filippo in 1448; Filippo Maria had no further daughters with which to bind the two Visconti lines together, and beyond any political aspirations Valentina had always been the most cherished of his children. In the wake of Valentina's demise the Emperor gradually withdrew from the court at Pavia, becoming ever more morose and reclusive; government passed increasingly to Cosimo de Medici, for the young king Gian Galeazzo II- by now in his early twenties- had become an indolent and indecisive king long accustomed to surrendering to the influence of more formidable individuals. Although kindly, well-read, and impulsively energetic Gian Galeazzo lacked the spine or the resolve for captaining what was in 1450 Europe's most powerful state, and the court at Pavia quickly slipped from the ailing Filippo Maria into the waiting hands of the urban oligarchs and merchants.
Tarot Cards depicting the Visconti
Filippo Maria Visconti breathed his last in Pavia on December 23rd, 1450, an end long anticipated by both the assorted Visconti courtiers and the German princes. With his death Gian Galeazzo II formally acceded to the crown of Naples but in truth his actual power and influence were not meaningfully expanded, as the king was easily swayed by the Medici and other note-worthies. With Filippo Maria died the impressive string of capable monarchs which had forged Milan into the political heart of the Mediterranean world; for the first time in its history the formidable Visconti state had to endure the reign of a weak and incompetent ruler.
Across the Alps, the thirty-five year old Frederick V quickly secured his election to the German Kaisardom, Gian Galeazzo casting a failed vote for himself (along with the King of Lorraine and the Palatinate) and the Polish king Frederick II backing his own candidacy rather than the unimpressive young Visconti heir; the Frisians, under the influence of the English, backed Austria. Gian Galeazzo did not contest Frederick's election, but Frederick was intent on securing an imperial coronation in Rome. Gian Galeazzo himself fled from the Emperor's stately procession in Germany for Milan. This blunder might ordinarily have provoked an imperial ban, but the amiable Frederick V was predisposed to diplomatic solutions wherever possible, and convened the first Emergency Council in Munich to resolve the dispute, demanding that King Gian Galeazzo “present himself before his Emperor and air his grievances like an honest man.”
After consultation with his advisors Gian Galeazzo yielded to the Imperial demand and on March 23rd 1451 he appeared in Munich with a sizable retinue. The entire meeting was meticulously recorded by German scribes, and the following exchange in particular is heavily cited:
Frederick: “Do you mean to bar my passage [across the Alps]?”
Gian Galeazzo: “Do you mean to steal my kingdom?”
Frederick: “I am the Emperor of Rome, King of Germany and Italy, and your liege.”
Gian Galeazzo: “Do you claim dominion over my lands?”
Frederick: “The Holy Empire claims dominion over all lands.”
Ultimately Frederick managed to soothe the flighty Gian Galeazzo by offering him his daughter Elizabeth as a new bride. In leiu of any dowry the Emperor-Elect offered to formally cede Carniola and Tirol to the Visconti, renouncing his claims to those lands[A]; henceforth the Visconti's consorts styled themselves as the Duchess of Tirol and Carniola. Elizabeth, although two years younger than her husband, was far more regal and willful, and rapidly made herself the
eminence grise of Milan just as the late Filippo Maria had done prior. When the couple's first child was born in 1452 the formidable Elizabeth insisted on naming him after her father; the feckless Gian Galeazzo rapidly yielded to his wife's entreaties, abandoning his plan to name the boy after his own father and predecessor Gian Maria and agreeing to name his heir was thus named Gian Federico instead.
The Habsburg-Visconti marriage stabilized relations in the wake of Gian Maria's conquest and formally re-asserted the feudal hierarchy in a manner that both rulers found acceptable. It did not end the rivalry between Habsburg and Visconti, and this would not be the last time a contested election nearly resulted in war, but it did form the framework for Italo-German political relations for the foreseeable future.
This inauspicious beginning of Gian Galeazzo II's reign augured poorly for the future, and further ill omens arrived one after the other. An earthquake struck Venice in 1451, many claiming the “sinful excess” of the Republic as responsible; in Naples the plague reared its head; a fire in Pisa ravaged the merchant's quarter in 1452, and incited a general economic malaise across Tuscany; and in in 1453 all of Europe convulsed in panic when Venetian traders brought dire news from Syria: Antioch had fallen, and the armies of Sultan Uzun Hassan of Persia were marching on Jerusalem.
[A]This is based on the OTL resolution of the Welf-Staufer feud; Frederick II seized their Saxon holdings and then re-enfeoffed the Welfs with the Duchy of Brunswick. Medieval politics is a mashup between mafia blood-feuds and insane legal munchkinry; you could claim land because the last ruler was your wife's fourth cousin twice removed, you could get the Pope to give you the right to steal someone's stuff after you conquered it, you could claim the old king was a bastard and try to usurp him because you have the bigger army and are married to his niece, you could claim that as the immediate heir to that French warlord from a century ago who conquered a bunch of places you were the legitimate Roman Emperor and proper ruler of everything in Italy, but you had to have
something beyond just force if you wanted to be secure in your conquests, and the more spurious the claim the harder it was to hold onto it and the more naked the force needed to make good on it.