Olaf II of Denmark in the context of "Commemorative plaque"

Haakon VII (Norwegian pronunciation: [ˈhôːkʊn]; born Prince Carl of Denmark; 3 August 1872 – 21 September 1957) was King of Norway from 1905 until his death in 1957. Having reigned for nearly 52 years, he was the second longest-reigning monarch in Norwegian history, after Christian IV.

He was born in Copenhagen during the reign of his grandfather, King Christian IX of Denmark; he was named Carl at birth and was the second son of the Crown Prince and Crown Princess of Denmark (later King Frederick VIII and Queen Louise). Carl was educated at the Royal Danish Naval Academy and served in the Royal Danish Navy. After the 1905 dissolution of the union between Sweden and Norway, he was offered the Norwegian crown. Following a monarchy referendum, he accepted the offer and was formally elected King of Norway by the Storting and took the Old Norse name Haakon, thus ascended the throne as Haakon VII, becoming the first independent Norwegian monarch since Olav IV in 1387.

Margaret I (Danish: Margrete Valdemarsdatter; March 1353 – 28 October 1412) was Queen regnant of Denmark, Norway, and Sweden (which included Finland) from the late 1380s until her death, and the founder of the Kalmar Union that joined the Scandinavian kingdoms together for over a century. She had been queen consort of Norway from 1363 to 1380 and of Sweden from 1363 to 1364 by marriage to Haakon VI. Margaret was known as a wise, energetic and capable leader, who governed with "farsighted tact and caution", earning the nickname "Semiramis of the North". Also known famously and derisively as "King Breechless", one of several derogatory nicknames once thought to have been invented by her rival Albert, King of Sweden, she was also called "Lady King" by her subjects, widely used in recognition of her capabilities. Knut Gjerset calls her "the first great ruling queen in European history".

The youngest daughter of Valdemar IV of Denmark, Margaret was born at Søborg Castle. She was a practical, patient administrator and diplomat, albeit one of high aspirations and a strong will, who intended to unite Scandinavia forever into one single entity with the strength to resist and compete against the might of the Hanseatic League. In 1363, aged ten, Margaret married Haakon VI. In 1370, they had a son, Olaf. Following the deaths of her husband and son, Margaret was proclaimed queen of the Scandinavian kingdoms. She was ultimately succeeded by a grandnephew, Erik of Pomerania. Although Erik came of age in 1401, Margaret continued for the remaining 11 years of her life to be sole ruler in all but name. Her regency marked the beginning of a Dano-Norwegian union which was to last for more than four centuries.