July 1 » Union of Lublin: The Kingdom of Poland and the Grand Duchy of Lithuania confirm a real union; the united country is called the Polish–Lithuanian Commonwealth or the Republic of Both Nations.
When copying data from this family tree, please include a reference to the origin: Susan L Mort, "Mort Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/mort-family-tree/P1114.php : accessed May 12, 2025), "Wilhelm Von Sayn Wittgenstein (1569-1623)".
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