Pseudonyms, Pen Names, and Aliases

The topic for this week's Auntie Quiz ("zzz") is: pseudonyms, pen names, and aliases. The idea is to look at the more familiar name of the writer and then guess his or her pen name or real name, whatever the case may be.
(By the bye, I wouldn't mind if the LitNetters kept this thread going with more examples or comments upon the individual writers or the use of pseudonyms in general.)

1. George Orwell

2. Isak Dinesen

3. O. Henry

4. Charles Dickens

5. George Eliot

6. Mark Twain

7. Washington Irving

8. George Sand

9. Voltaire

10. Ellery Queen

11. Findley Peter Dunne

12. Artemis Ward

13. Saki

14. Joseph Conrad

15. Charles Lamb[/FONT]

Answers
1. Eric Arthur Blair 2. Baroness Karen Dinesen Blixen 3. William Sydney (or "Sidney") Porter 4. Boz
5. Mary Ann Evans 6. Samuel L. Clemens 7. Dietrich Knickerbocker 8. Amandine Lucie Aurore Dupin
9. Francois Marie Arouet 10. Frederic Dannay and Manfred B. Lee 11. Mr. Dooley
12. Charles Farrar Browne 13. H.H. Munro 14. Teodor Josef Konrad Korzeniowski 15. Elia

Thanks again, Auntie, for making us work and have fun at the same time. I knew a few of these:

Amazingly enough, numbers 2 and 5 both appear in my story The Dinner Guest, in Part 9 which comes out next week, not that I'm trying to give myself a plug or anything like that.

I knew numbers 3, 4, and 6 from reading. Diligent work on crossword puzzles makes numbers 13 and 15 relatively easy.

And on number 14, while I knew Conrad was Polish, I could never remember his exact last name because it has way too many letters for me. So I won't take credit for this one.

So I got 7 right, which puts my batting average below .500, or a little less than what I scored on your Olympics quiz last week.

Francois Marie Arouet Le Jeune :)