Marie of Hesse-Cassel was a German princess born on June 14, 1749. She was the daughter of Landgrave Frederick II of Hesse-Cassel and Princess Mary of Great Britain. In 1763, she married Prince William of Denmark, becoming the Duchess of Schleswig. Marie was known for her charitable work and support of the arts. She played a significant role in the cultural life of her time, promoting education and welfare initiatives. Marie passed away on May 27, 1776, leaving a legacy of compassion and dedication to her community.