His principal achievement was the Peace of Linz (September 16, 1645), the last political triumph of Hungarian Protestantism, in which the emperor was forced to confirm again the articles of the Peace of Vienna.
Tema peamine saavutus oli Linzi rahu (16. september 1645), viimane Ungari protestantismi poliitiline võit, millega keiser oli sunnitud taas kinnitama Viini rahu sätteid.