John Sobieslaw of Moravia (1352 – c. 30 October 1380) was a feudal lord in Bohemia.
He was a junior margrave of Moravia.
John was the second son of John Henry, Margrave of Moravia and Margaret of Opava.
In historiography, he was mistaken for his illegitimate half-brother patriarch of Aquileia John of Moravia [cs], for a long time.
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