M. David Loyal is the primary author and editor-in-chief of the Castle Zierath world. He is a jack-of-all trades. He is an author, an artist, an animator, an actor, and a director. He has worked as a cashier, a waiter, a factory worker, a teacher, and a TRiO professional. He lives in the driftless area of the American Midwest with his wife Kathleen.