The Llewellin Setter (pronounced "loo-WELL-in"), often just called the Llewellin, is a field-bred strain of the English Setter rather than a separate breed. It descends from the breeding program of Richard Purcell Llewellin, a Welsh sportsman of the mid-1800s who wanted a smaller, harder-driving setter for bird hunting at a time when many English Setters were being bred for the show ring. The Field Dog Stud Book (FDSB) registers Llewellins as a distinct strain of English Setter; there is no separate American Kennel Club recognition and no formal breed standard, so individual dogs vary considerably in size, color, and personality. What unites them is the package upland hunters prize: a close-working, bird-obsessed gun dog in the field that turns into a soft, human-centric, easy-living companion at home.