"Illeiro and Hestaiyon" by Alexander J. Harron

There was little speech among the living dead; and son and father, daughter and mother, lover and beloved, went to and fro without sign of recognition, making no comment on their evil lot. But at last, one midnight, when the tyrants lay in slumber, and the flames wavered in the necromantic lamps, Illeiro took counsel with Hestaiyon, his eldest ancestor, who had been famed as a great wizard in fable and was reputed to have known the secret lore of antiquity.

Hestaiyon stood apart from the others, in a corner of the shadowy hall. He was brown and withered in his crumbling mummy-cloths; and his lightless obsidian eyes appeared to gaze still upon nothingness. He seemed not to have heard the questions of Illeiro; but at length, in a dry, rustling whisper, he responded:

'I am old, and the night of the sepulcher was long, and I have forgotten much. Yet, groping backward across the void of death, it may be that I shall retrieve something of my former wisdom; and between us we shall devise a mode of deliverance.' And Hestaiyon searched among the shreds of memory, as one who reaches into a place where the worm has been and the hidden archives of old time have rotted in their covers; till at last he remembered...

'The Empire of the Necromancers' - Clark Ashton Smith