Preserving raw date into subsequent jpeg

2012-11-28
2013-02-27
  • Is there any way to edit and create a jpeg, from a raw original, that somehow preserves the date/time of the raw original?

     
  • Even more important, is there a way to put the raw filename into a jpeg header, so it can be seen with exif? 
    In other words if I make a jpeg named Holy-Grail.jpg I would like to use exif to examine the jpeg header, so I can see it was originally made from DSCN_1234.NEF on 10/22/2012 ……..that would allow me to find the original raw file Holy-Grail.jpg was made from.