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A goldsmith and soldier, he assembled his friends to attack the powerful Hungarians (and Moravians[1]). He made helmets and breastplates out of tree bark, and enameled them, put them on poles to illude soldiers; the Hungarians supposed they were enemies, and marched towards them. Finding only forests, the Hungarians were surrounded by Premislaus' troops who attacked from all sides. The Hungarians were unable to distinguish the real soldiers from the imaginary, and fled in fear. The captives were slaughtered, and Poland secured freedom. Premislaus took the nameLesko I and ruled peacefully. He died without issue, leaving Poland once again in conflict.