Matthias Corvinus participant in Battle of Třebíč
War for the Lands of the Bohemian Crown (1468–1479)
Matthias's former brother-in-law Victor of Poděbrady invaded Austria in early 1468. Emperor Frederick appealed to Matthias for support, hinting at the possibility of Matthias's election as King of the Romans—first step towards the imperial throne. Matthias declared war on Victor's father King George of Bohemia on 31 March. He said he also wanted to help the Czech Catholic lords against their "heretic monarch" whom the Pope had excommunicated. Matthias expelled the Czech troops from Austria and invaded Moravia and Silesia. He took an active part in the fighting; he was injured during the siege of Třebíč in May 1468 and was captured at Chrudim while spying out the enemy camp in disguise in February 1469. On the latter occasion, he was released because he made his custodians believe he was a local Czech groom.The Diet of 1468 authorized Matthias to levy an extraordinary tax to finance the new war, but only after 8 prelates and 13 secular lords pledged on the King's behalf that he would not demand such charges in the future. Matthias also exercised royal prerogatives to increase his revenues. For instance, he ordered a Palatine's eyre in a county, the cost of which were to be covered by the local inhabitants but soon authorized the county to redeem the cancellation of this irksome duty.The Czech Catholics, who were led by Zdeněk of Šternberk, joined forces with Matthias in February 1469. Their united troops were encircled at Vilémov by George of Poděbrady's army. In fear of being captured, Matthias opened negotiations with his former father-in-law. They met in a nearby hovel, where Matthias persuaded George of Poděbrady to sign an armistice promising that he would mediate a reconciliation between the moderate Hussites and the Holy See. Their next meeting took place in Olomouc in April. Here the papal legates came forward with demands including the appointment of a Catholic Archbishop to the See of Prague, which could not be accepted by George of Poděbrady. The Czech Catholic Estates elected Matthias King of Bohemia in Olomouc on 3 May but he was never crowned. Moravia, Silesia and Lusatia soon accepted his rule but Bohemia proper remained faithful to George of Poděbrady. The Estates of Bohemia even acknowledged the right of Vladislaus Jagiello, the eldest son of Casimir IV of Poland, to succeed king George of Poděbrady.
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