Diana Jean Gabaldon Watkins is an American author of Mexican-American and English ancestry. Diana Gabaldon is her maiden name, and the one she uses professionally. Gabaldon is the author of the best-selling Outlander Series. Her books are difficult to classify by genre, since they contain elements of romantic fiction, historical fiction, and science fiction . Her books have so far been sold in 23 countries, and translated into 19 languages besides English.