Atlas comes from Greek mythology, where the Titan of that name was condemned to hold up the sky, and the word itself is thought by some scholars to relate to endurance or suffering, though its deeper roots are debated. As a given name it points toward capacity -- the ability to carry weight without buckling under it.
Make the Sun, or any of the superiors to signify princes and great persons. Scribes and rusticks, [are shown by] the inferior planets, and chiefly the Moon. - William Lilly (1602.-1681.)