Dorothea Mary Stanislaus Gerard (Mme Longard de Longgarde, 9 August 1855 – 29 September 1915) was a Scottish-born novelist and romance-writer who often wrote about controversial and unconventional subjects and "whose general conservatism co-existed with a piercing eye for relations across national and ethnic divides, for antisemitism and other forms of prejudice." At first she wrote for pleasure with her less prolific older sister Emily Gerard but later carved an independent career publishing about forty books between 1890 and 1916 mostly for Tauchnitz editions signifying her target audience was mainly English-speaking visitors travelling in Europe.