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  1. Mongol incursions in the Holy Roman Empire - Wikipedia

    en.wikipedia.org/wiki/Mongol_incursions_in_the...

    1 day ago · In a letter to Conrad IV dated 13 June 1241, Duke Frederick II reports on the damage the Mongols inflicted on Austria and estimates that he killed 300 of them on the banks of the Morava. [25] [26] A week later, in a letter to Bishop Henry of Constance dated 22 June 1241, [h] Frederick revises his estimate of casualties upwards to 700 and puts ...