Herman Zimmerman Raymond was a Human, and a progeny of Clare Raymond. He was the son of Brian Vogt Raymond and his wife. He had three brothers named Andrew Probert Raymond, Jeff Hadjikhani Raymond, and Roger Lay Raymond. (TNG: "The Neutral Zone", okudagram)
The name of this character was never mentioned in dialog; the name came from the remastered Clare Raymond family tree.
Herman Zimmerman was named for the Art Director and Production Designer Herman Zimmerman