an Entity references as follows:
Princess Helena of Denmark (c. 1180 – 22 November 1233 in Lüneburg) was heiress of Garding and Duchess consort of Lüneburg. Helena was daughter of Valdemar I of Denmark and Sophia of Minsk and sister of Ingeborg of Denmark, Queen of France. Helena died in 1233 and was buried in the Benedictine monastery of St. Michael in Lüneburg.