https://en.wikipedia.org/wiki/The_Langs%27_Fairy_Books
From WP though: 'authors, including E. Nesbit, Robert Louis Stevenson, Rudyard Kipling, and Arthur Conan Doyle, were influenced by the Langs' books. J. R. R. Tolkien wrote that "In English none probably rival either the popularity, or the inclusiveness, or the general merits of the twelve books of twelve colours which we owe to Andrew Lang and to his wife."
Actually had a somewhat of tale of their own in publishing.
'Although Andrew is often credited with selecting the stories in the Fairy Books, most of the work was done by Nora. Nora and a team of other writers, who were mostly women and included May Kendall and Violet Hunt, translated these into English and adapted them to suit Victorian and Edwardian notions of propriety. However, as Andrew acknowledges in a preface to The Lilac Fairy Book (1910), "The fairy books have been almost wholly the work of Mrs. Lang, who has translated and adapted them from the French, German, Portuguese, Italian, Spanish, Catalan, and other languages."'