Memphian

Through the Memphian dark of the tomb cut a spear of light, touching the last stone of the stairway.
The Insidious Dr. Fu-Manchu|Sax Rohmer
But history and tradition assert that they were the tombs of the Memphian Kings.
Harper's Young People, May 10, 1881|Various
Cheops, one of the Memphian Kings, built the largest of the Pyramids, and near it are several others not much less in size.
Harper's Young People, May 10, 1881|Various
Memphian, mem′fi-an, adj. relating to Memphis, an ancient capital of Egypt.
Chambers's Twentieth Century Dictionary (part 2 of 4: E-M)|Various

Your Memphian, however, is not at all content to date from 1820.
American Adventures|Julian Street

British Dictionary definitions for Memphian

Memphian

/ (ˈmɛmfɪən) /

adjective

of or relating to ancient Memphis or its inhabitants

noun

an inhabitant or native of ancient Memphis

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012