Trivial Trivia - taking trivia to new levels

[J. Beckert]

Linda got it! I realize now that Hint #1 may have been a little ambiguous. What I meant to do by mentioning the fact that Sothern looks "hauntingly like Booth", was to lead you to the answer that it was Booth.

Speaking of his fellow actors, Booth said they were "Mummers of the quality of skinned milk" and "There are not half a dozen really good players in America, and in all Europe, less than a score. Actors they call themselves, forsooth. Pouf! They know little, think less and understand next to nothing."
A rather cocky statement for an actor with only a few years traveling as a star.