Immemorially

[…] by vast odds, the most terrific of all mortal disasters have immemorially and indiscriminately befallen tens and hundreds of thousands of those who have gone upon the waters […]

Yet, O reader, the brave woman accepted the lot, and took up the cry which had been its sign immemorially, and which thenceforward was to be her salutation without change—“Unclean, unclean!”

[…] as for barbers, he had never liked those who cut his own hair; he thought too how it would disgust Pundit Jairam to learn that his former pupil had taken up barbering, a profession immemorially low.