Most photographed

[L Verge]

May have been a topic before (but I can't find it in Trivia). Who are the three most photographed people of the 19th century? Bonus if you can put them in order (and even that is subject to debate). Of course, no googling.

To start the ball rolling, is it safe to assume that we are looking for personalities from the 1850s-90s? American and English and maybe French?

If we are doing only Americans: Several years ago, I saw a review for a book on all the photos that were taken of Frederick Douglass, and he ranked #1. I would guess that Lincoln would be #2. I have no idea who would be #3, but with all those military generals posing and preening during the Civil War, I would bet on one of them...