Princess Louise of Prussia in Baden, and everyone spoke with affectionate pride of their grand duke and duchess in Constance, where the couple had a summer residence. Louise was a great friend of Alice, Grand Duchess of Hesse, her sister-in-law's younger sister; i.e., Alice was the sister of Victoria, Louise's brother Frederick's wife, both sisters being daughters of Queen Victoria. The two often visited each other. In Queen Victoria's letters, she and Frederick were always referred to with pleasure or sympathy as "good Fritz and Louise of Baden". Though friends as young girls, Louise and her sister-in-law Victoria, Princess Royal ("Vicky") always had a
Princess Marie Louise of Schleswig-Holstein and their high standards, that she declared the group as her own, and it has since been known as the 4th Streatham Sea Scout Group (Princess Marie Louise's Own). In July 1917, when George V changed the name of the British Royal House from the House of Saxe-Coburg-Gotha to House of Windsor, he also ordered his numerous cousins and in-laws, who were British subjects, to discontinue the use of their German titles, styles, and surnames. Never taking other titles or surnames, Princess Marie Louise and her unmarried sister, Princess Helena Victoria, became known simply as "HH Princess Marie Louise" and