Children: at least son John, possibly the daughter Euphemia was already born.
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Duke Magnus I of Mecklenburg (d. 1.9.1385), married 1369 Elisabeth of Pomerania-Rügen.
In the 15th century, the Oldenburg heir of that claim married Hedwig of Schauenburg, a descendant of Euphemia of Sweden and Norway and also a descendant of Eric V of Denmark.
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House of Mecklenburg, in which a princess of Sweden Euphemia, have ancestors there and (in several ways) in all ruling royal houses of Europe through her son Magnus I of Mecklenburg and grandson Magnus II, Duke of Mecklenburg