An excellent thesis by Martin James Sutton describing how 19th century "translators" edited and rewrote the Grimms Märchen.
THE SIN COMPLEX: A CRITICAL STUDY OF ENGLISH VERSIONS OF THE GRIMMS' KINDER- AND HAASMARCHEN IN THE NINETEENTH CENTURY IN COMPARISON WITH THE GERMAN ORIGINALS
by Martin James Sutton.
Download Part 1 of the file here. Part II here.
A must read for anyone interested in the Grimms Märchen.