Thanks to Clayton Campbell for pointing out this hilarious nugget from Samuel Clemens’ autobiography (Vol. 1, pg 204-205):
… And so, by the testimony of instinct, backed by the assertions of Clemenses who said they had examined the records, I have always been obliged to believe that Geoffrey Clement the martyr-maker was an ancestor of mine, and to regard him with favor, and in fact pride. This has not had a good effect upon me, for it has made me vain, and that is a fault. It has made me set myself above people who were less fortunate in their ancestry than I, and has moved me to take them down a peg, upon occasion, and say things to them which hurt them before company.
A case of the kind happened in Berlin several years ago. William Walter Phelps was our Minister at the Emperor’s Court, then, and one evening he had me to dinner to meet Count S., a cabinet minister. This nobleman was of long and illustrious descent. Of course I wanted to let out the fact that I had some ancestors, too; but I did not want to pull them out of their graves by the ears, and I never could seem to get a chance to work them in in a way that would look sufficiently casual. I suppose Phelps was in the same difficulty. In fact he looked distraught, now and then—just as a person looks who wants to uncover an ancestor purely by accident, and cannot think of a way that will seem accidental enough. But at last, after dinner, he made a try. He took us about his drawing-room, showing us the pictures, and finally stopped before a rude and ancient engraving. It was a picture of the court that tried Charles I. There was a pyramid of judges in Puritan slouch hats, and below them three bare-headed secretaries seated at a table. Mr. Phelps put his finger upon one of the three, and said with exulting indifference—
“An ancestor of mine.”
I put my finger on a judge, and retorted with scathing languidness—
“Ancestor of mine. But it is a small matter. I have others.”
It was not noble in me to do it. I have always regretted it since. But it landed him. I wonder how he felt? However, it made no difference in our friendship; which shows that he was fine and high, notwithstanding the humbleness of his origin. And it was also creditable in me, too, that I could overlook it. I made no change in my bearing toward him, but always treated him as an equal.
. . . The evening had its defects; still, I got my ancestor in, and was satisfied.