Gertrude Schoepperle Loomis (1882-1921), born Gertrude Schoepperle, married the medieval scholar Roger Sherman Loomis in 1919, only three years before her untimely death. Both husband and wife were Arthurian scholars. Gertrude Schoepperle is best known for her unsurpassed Tristan and Isolt: A study of the sources of the romances, first published in 1913. Almost a century later it is still generally considered to be, by far, the best book on the subject.