Herbert is from The Way to Eden (or so I'm assuming)
"Mr. Spock... what does 'Herbert' mean?"
"It is somewhat... uncomplimentary, captain. Herbert was a minor official -- notorious for his rigid and limited patterns of thought." - Kirk and Spock on the hippies' epithet
Which was an affectionate dig at former Desilu exec Herbert F. Solow, who bought Star Trek and got it on the air.