Her older brother was Alfred de Glehn, designer of the French steam locomotive engine.
[3] In 1885, Creighton founded the National Union of Women Workers with Lady Laura Ridding and Emily Janes.
[7] Creighton was a popular author, particularly of historical biographies and stories for children including the successful "Child's First History of England".
After nearly twenty years living in a grace-and-favour apartment at Hampton Court Palace, Creighton moved back to Oxford in the late 1920s, and subsequently served on the governing board of Lady Margaret Hall.
After a period of declining health, she died on 15 April 1936,[8] and her cremated remains were buried in St Paul's Cathedral, London in the grave of her husband.