The Man standing to Yoko's right is definitely David Lennon. I heard him interviewed on the radio a month ago. For a while I wasn't quite sure it had been for real and spent way way too much time trying to back it up and having not much luck varyfying it until I found this site. Comparing that photo to the other site he mentioned,it's him,but now slightly older. He only met John once,and the memorial was the first time he met Ingrid. The young woman interviewing him clearly didn't understand what a mind boggling interview she was having,nor the network broadcasting it,because I haven't heard a peep out of anyone since. I'm in the process of hunting it down. He claimed John was basically a non entity in his house and everybody avoided bringing him up.No one wanted to be hastled by the fans. Apparently he and his brother had a normal happy upbringing. He mentioned finding that site dissing his father mentioned earlier in this thread and got so upset he just had to set the record straight.Apparently Alfred was a great Dad. Brother Robin was upset by this breach in privacy,and even more so when Dave posted his recent wedding video on Youtube. There are actually several Liz and Dave Weddings .His is the slide show presented to "I only want to make you happy". In it,the best shot of him that I used to compare to the memorial is at 1:24. You'll also see his beautiful new bride and Robin as his best man,and various unknown family members. I wish them all the best. Also,after all these years,he's finally taken an interest in music and is learning the guitar and has even gone to a few Beatle-fests. He finished the interview by singing one of his own compositions. He sounds nothing like John,but hey,not bad for an amateur.
On the subject of Ingrid and the guy kneeling next to her,for a photo I'm sure I had never seen before,it had a massive deja-vu feel to it,like they were walking toward me.It took me a long time for me to figure this out,but I think when I saw the documentary John Lennon vs. The U.S at the Toronto International Filmfest,they were part of the audience. I also remember just seeing the two strolling about,turnig heads,with even some of the celebrities wondering who they were.