Richardson, who died in a skiing accident in 2009, was feted for her philanthropy during the 2014 amfAR gala at the Cipriani Wall Street venue in Manhattan on Wednesday.The event was attended by Neeson and the couple's two sons, as well as Richardson's actress mother Redgrave and her sister Joely Richardson, who accepted an award on her late sibling's behalf.Neeson and Redgrave also made speeches, and Richardson admitted she felt overwhelmed with emotion when a video of her sister was played after her mother's address, telling the audience: "It's always nice to speak after Vanessa Redgrave... I really did want to come up here and make silly jokes like, 'Behind every great woman is one idiotic daughter,' and then you played this video, which we didn't know about, and it absolutely floored me. So amazing to see my sister's face again supporting amfAR... I'm a little bit emotional. It was that video."Actress Robin Wright was also on hand to honour photographer Peter Lindbergh for his charity work, while other attendees included veteran crooner Harry Belafonte and actress Jane Krakowski.