That's probably the last footage from him (this was already after cancer treatment), late last year during the studio re-recording of his beloved Concerto for Group and Orchestra with, inter alia, Joe Bonamassa. That just came out on CD and the fact that Jon wasn't around for any promotion of his musical love child was already a bad omen for me.
I've always said that Bonamassa has more than a touch of seventies Blackmore in his playing and you can hear it in that clip quite distinctly. People have always underestimated how bluesy Blackmore can be. He has, btw, named his newborn son "Rory", no doubt with a nod to Gallagher (Rory, not Noel or Liam!) whose playing also had strong parallels to Blackmore's.
Back to Jon, that is a nice obituary on him here:
http://www.guardian.co.uk/music/musicblog/2012/jul/16/jon-lord-deep-purple-whitesnakeLord wasn't a Keith Emerson or Rick Wakeman and he never claimed to be (except when he jokingly introduced himself at a DP concert with: "And my name is Rick Emerson!"), he was to DP more what Keith Richards is to the Stones eben if he had never written a song, a chief contributor of sound and groove. I always loved Jon's organ phrasing here:
