Colluding with the Infidel: The Alliance between Ladislaus of Naples and the Turks
Colluding with the Infidel: The Alliance between Ladislaus of Naples and the Turks

Summary/Abstract: In October 1392, King Ladislaus of Naples (1386–1414) sent letters and an embassy to the court of the Ottoman Sultan Bayezid (1389–1402) offering to establish a pact against their common enemy, King Sigismund of Luxembourg (1387–1437). According to the “indecent proposal,” this “unholy alliance” was supposed to be sealed and strengthened by a marriage between King Ladislaus and an unnamed daughter of the sultan. Though the wedding never took place, messengers were exchanged and a tactical pact did materialize. It was manifested through military cooperation between Ladislaus’ Balkan supporters and the Ottoman marcher lords, who undertook joint attacks against the subjects of King Sigismund and their territories. Although mentioned briefly in passing, this incredible episode and the resulting alliance have never before been analyzed in depth by historians. Attempting to shed some light on the topic in general, this article proposes to examine the available narrative and diplomatic sources, assess the marriage policy of the Ottoman sultans as a diplomatic tool in the achievement of their strategic goals, and the perceived outrage that news of the potential marriage caused among the adversaries of King Ladislaus. In addition to studying the language of the letters, which extended beyond subtle courtesy, the essay will also explore the practical effects and consequences of the collusion between Ladislaus and the Turks for the overall political situation in the Balkans during the last decade of the fourteenth century and first decade of the fifteenth.

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