The guy

 No gravestone... just a marker
An unknown guy died 
It wasn't in the papers 
Because he was no one.

His life was short
Non-descript, average
A man from the road
A man without kin

The coroner's assistant
Uncovered a life
That posed no threat
And had no celebrity - attached

He died on Monday

Buried & marked
The same week
No one noticed
No one mourned