Article continues below advertisementPrior to his wife and daughter's untimely deaths, Martin Short lost his brother, mom and dad - all before the age of 21. The actor, 76, reflected on experiencing so much loss at an early age during an appearance at the Netflix Is a Joke Presents: This Better Be Funny with David Letterman event in Los Angeles on Thursday, May 7.Commenting on Short's upcoming Netflix documentary film, Marty, Life Is Short, Letterman said, "One thing that struck me was your childhood.