Margaret, queen of Denmark, Norway, and Sweden, was the daughter of Waldemar IV. of Denmark, whose crown, on his death in 1375, she received in trust for her son Olaf; her husband, Hacon VIII. of Norway, died in 1380, and left her queen; Olaf died 1387, when she named her grand-nephew, Eric of Pomerania, her heir; the Swedes deposed their king next year, and offered Margaret the throne; she accepted it, put down all resistance, and ultimately brought about the Union of Calmar (1397), which provided for the perpetual union of the three crowns; her energy and force of character won for her the title of “Semiramis of the North” (1353‒1412).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Mareotis, Lake * Margaret