The Gilded Grasshopper

 is a quest in Fallout 4.

Quick walkthrough

 * 1) Pick up the Marty Bullfinch file in Nick Valentine's agency.
 * 2) Go to Faneuil Hall and find the Gilded Grasshopper on the roof.
 * 3) Read the note in it, then find the grave just west of Pickman Gallery
 * 4) Dig up the grave and claim the spoils