Herman Zimmerman Raymond was a Human. As the son of Brian Vogt Raymond and Hilary Groener Raymond, he was the great-great-great-great-great-great-great grandchild of Clare and Donald Raymond. His brothers were Andrew, Jeff, and Roger. (TNG-R: "The Neutral Zone", okudagram)
This character was only mentioned in writing.
The name came from the remastered Clare Raymond family tree.
Herman Zimmerman Raymond was named after Star Trek Art Director/Production Designer Herman Zimmerman.