Overview
Margaret Sambiria (in Danish: Margrethe Sambiria, Sambirsdatter or Margrethe Sprænghest; c. 1230 – December 1282) was Queen of Denmark by marriage to King Christopher I, and regent during the minority of her son, King Eric V from 1259 until 1264. She is the first woman confirmed to have formally ruled as regent of Denmark. She was the reigning fief-holder of Danish Estonia in 1266–1282.
Life
Margaret was born around 1230 to Sambor II, Duke of Pomerania and Matilda of Mecklenburg.
She had a Danish connection from her maternal grandparents Henry Borwin II, Lord of Mecklenburg and Lady Kristina from Scania, who was reportedly a daughter of the Danish magnate Galen clan from Eastern Denmark, and related to the Hvide clan of Zealand.
Margaret received her first name, then yet relatively rare in North Germany and Poland, in honor of her maternal Scandinavian relations, where the name Margaret came in the late 11th century with the family of Inge I of Sweden, presumably of her aunt, the countess of Schwerin, and her great-aunt, the Princess of Rugia.
Queen
In 1248, she married Prince Christopher, the youngest son of Valdemar II of Denmark and Berengária of Portugal. In accordance with the then succession custom of agnatic seniority, her husband ascended the throne of Denmark in 1252. Margaret was crowned with him on 25 December 1252 at Lund Cathedral.
From Wikipedia (CC BY-SA 4.0).