James R. Keene was one of the worlds richest men because of his success on wall street. He managed funds for J. P Morgan and William Rockefellar.
He owned an amazing 7 Hall of Fame race horses. (Sysonby, Colin, Domino, Kingston, Peter Pan, Commando, and Maskette) and left $15 million behind at the time of his death in 1913.
He attacked Plunger Walton in Europe:
Here's the opening of a column from the 1920's where Salvator describes Plunger Walton forty years after his demise in the racing game: