Hiram Hersheimmer

In the novel The Secret Adversary, Hiram Hersheimmer was an American industrialist and the father of Julius Hersheimmer. He passed away before the time of the events of the novel, leaving his wealth to Julius.

Hiram had a sister, Jane, with whom he did not always get along. He was angry when she wanted to marry Amos Finn, and said that if he became rich, he would not share his wealth with her.

According to Julius, Hiram did business involving oil, steel and a little with railroads, and he "made Wall Street sit up".