One of the four sons of Horus, Duamutef, whose name means “he who honors his mother,” is depicted as a jackal-headed mummy on the jar containing the stomach of the deceased. Duamutef, together with Horus and Kebehsenuf, is said in CT spell 158/BD spell 112 to be among the “Souls [Bau] of Nekhen,” or Hierakonpolis, a town in Upper Egypt. In one text, Duamutef states to the deceased, “I bring your soul before you, so that it may move about [swtwt, ‘walk about’, ‘promenade’] in the place of your heart; may you repose with it for eternity,” the heart serving as a place of excursion or recreation for the ba (Lefebvre 1920, 227-228). Duamutef is the only one of the four sons of Horus for whom an independent priesthood is attested; this may be an accident of preservation, rather than indicating a special status.
Allen, T. G. 1974. The Book of the Dead or Going Forth by Day. Chicago: University of Chicago Press. [BD]
Faulkner, R. O. 1973-8. The Ancient Egyptian Coffin Texts. 3 vols. Warminster: Aris & Phillips Ltd. [CT]
Lefebvre, Gustave. 1920. “Textes du Tombeau de Petosiris.” Annales du Service des Antiquités de l’Égypte 20: 207-236.