Princess Blücher was born Evelyn Stapleton-Bretherton, the daughter of an English Catholic landed gentry family settled at Rainhill Hall, Lancashire. In 1907, she married Gebhard Leberecht Blücher von Wahlstatt, the 4th Fürst (Prince) Blücher, an Anglophile who was descended from the famous General Field Marshal von Blücher. She spent the years of World War I in Germany and kept a diary of her life among the deeply conservative Prussian nobility. It became the basis for her memoir, An English Wife in Berlin (1920). After the war, she returned to England and co-edited her husband's memoirs.