Who the hell is JV? Are the kids supposed to run around calling grandpa, Jon? When is the last time you heard any grandfather tell the grand kids to call him by his name? What about all the cool names like Poppop or Pawpaw or Gramps, or Bastard as his daughter so affectionately refers to him?
To me this screams of either a made up story or a note sent by an assistant. At least I hope it is because this really does not seem like a great first step on the road to a warm and loving familial relationship.