Peace Treaty of Wiener Neustadt
... that a secret clause in the 1463 Peace Treaty of Wiener Neustadt allowed King Matthias I of Hungary to hire John Jiskra and his Hussite mercenaries, who would later form the core of the Black Army?
... that a secret clause in the 1463 <b id="mwAd4"><a class="mw-redirect" href="./Peace_Treaty_of_Wiener_Neustadt" id="mwAd8" rel="mw:WikiLink" title="Peace Treaty of Wiener Neustadt">Peace Treaty of Wiener Neustadt</a></b> allowed <a href="./Matthias_Corvinus" id="mwAeA" rel="mw:WikiLink" title="Matthias Corvinus">King Matthias<span id="mwAeE" typeof="mw:Entity"> </span>I of Hungary</a> to hire <a class="mw-redirect" href="./John_Jiskra" id="mwAeI" rel="mw:WikiLink" title="John Jiskra">John Jiskra</a> and his <a class="mw-redirect" href="./Hussite" id="mwAeM" rel="mw:WikiLink" title="Hussite">Hussite</a> mercenaries, who would later form the core of the <a href="./Black_Army_of_Hungary" id="mwAeQ" rel="mw:WikiLink" title="Black Army of Hungary">Black Army</a>?