GELLERT or KILLHART, in Welsh traditional history, the dog of Llewellyn, prince of Wales. The dog, a greyhound, is left to guard the cradle in which the infant heir sleeps. A wolf enters, and is about to attack the child, when Gellert flies at him. In the struggle the cradle is upset and the infant falls underneath. Gellert kills the wolf, but when Prince Llewellyn arrives and sees the empty cradle and blood all around, he thinks Gellert has killed the baby. He at once stabs him, and then finds his son safe under the cradle and realizes the dog's bravery. Gellert is supposed to have been buried near the village of Beddgelert ("grave of Gellert"), Snowdon, where his tomb is pointed out to visitors. The date of the incident is traditionally given as 1205. The story is only the Welsh version of a common tale which is traced to the Indian Panchatantra and perhaps as far back as 200 B.C.
See W. A. Clouston, Popular Tales and Fictions (1887) ; D. E. Jenkins, Beddgelert, its Facts, Fairies and Folklore (Portmadoc, 1899) .