Princess Mary of Great Britain was born on April 25, 1867, as the daughter of Prince Arthur, Duke of Connaught and Princess Louise Margaret of Prussia. She was a member of the British royal family and the granddaughter of Queen Victoria. Mary became known for her charitable work and dedication to various social causes. In 1922, she was appointed the first president of the British Red Cross, where she played a significant role in promoting health and welfare initiatives. She passed away on March 28, 1953, leaving a legacy of service and compassion.