Princess Victoria Alexandra Alice Mary, always known as Mary, was the third child and only daughter of the future King George V and Queen Mary, born while they were still Duke and Duchess of York. She was educated at home by governesses and became fluent in German and French. During World War I, she studied nursing and promoted the Girl Guide movement. The illustrated Princess Mary's Gift Book (1917) was sponsored by her and published to raise money for war relief efforts.
In 1922, she married Henry, Viscount Lascelles, elder son of the 5th Earl of Harewood, in the first royal wedding to be featured in the popular media. The couple had two sons and lived in London and, after her husband succeeded as 6th Earl of Harewood, at Harewood House near Leeds. In 1932, King George V gave Mary the title Princess Royal, which originated in the English royal family in the 17th century. She continued to carry out official duties in Britain and overseas until her death at age 67.