The Princess of Hesse-Kassel refers to various members of the Hesse-Kassel royal family, a branch of the House of Hesse in Germany. This family played a significant role in European history, particularly during the 18th and 19th centuries. The princesses often married into other royal families, strengthening political alliances across Europe. One notable figure is Princess Mary of Hesse-Kassel, who was born in 1776 and became the Queen of Denmark through her marriage to King Frederick VI. The Hesse-Kassel family is also known for their contributions to the arts and culture, as well as their involvement in various political affairs throughout their history.