The Luise Ulrike of Sweden reference article from the English Wikipedia on 24-Apr-2004
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Luise Ulrike of Sweden

Luise Ulrike of Sweden (1720 - 1782) was a daughter of Friedrich Wilhelm I of Prussia and his wife Sophie Dorothea von Hannover.

Ulrike, sister of Friedrich II of Prussia, married in 1744 Friedrich von Holstein-Gottorp, who after his election in 1751 reigned as King Adolf Frederick of Sweden.