Went to school with a guy whose last name was Grass.
It was the heady 70's and he inherited the nickname of DOPE..
When he started his first job the boss there did not know of his nickname and told everyone that we should call him GREEN as it was his first job.
Interestingly he has risen up the corporate ladder and has changed the pronunciation of his name to GRAZZ...
The Police have a different understanding of the name GRASS - an informer..