Here is what Aslan says to King Caspian when the latter wishes that he “‘came of a more honorable lineage'”:

“You come of the Lord Adam and the Lady Eve,” said Aslan.  “And that is both honor enough to erect the head of the poorest beggar, and shame enough to bow the shoulders of the greatest emperor in earth.  Be content.”  (C.S. Lewis, Prince Caspian, page 180; New York:  Collier Books, 1986)