There are several Herders. Friedrich Herder, Richard Herder, Robert Herder, and probably a few others.
Besides the fact they are all German, I don't know of any connection between these names - if there is one.
There's also George L. Herter, who ran a mail order company selling outdoors gear to American sportsmen, among that gear some knives.
I think R. Murphy Co is still making some of "his designs".