As for me, I'm English, Scotch, Irish, French, German, and Native American (Cherokee nation).
Of these, my usual introduction is "Through these veins flow only the finest Scotch." (Which isn't true, I sometimes imbibe the cheaper stuff if it is free.)
Technically, I'm a cousin to that great American humorist and journalist, Mark Twain. His real name was Samuel L Clemens. My mother's mother's mother's mother was Sally Clemens, who was the great man's sister or cousin or something. Of course, the relationship is so tenuous and distant that the estate doesn't even send me a Christmas card. Typically tight-fisted estate managers can't even spare a card to their cousin. Hmmmmph!