There is the Robert Picard who is the asshole brother of Jean-Luc Picard and there is the Robert Picardo who is a really cool actor in a ton of movies and shows including Star Trek: Voyager.
Regardless, I’m glad they asked because I mistakenly read the tombstone as Robert Picardo to begin with, so their question clued me in that that was not what was written.
It wouldn't be a perfect Nexus Christmas if his brother could be there - presumably to talk about the problems with how Romulans are taking over the planet...