While researching for 2017, I found out that Conrad Hilton's son, Eric Hilton has passed away at the age of 83. Now, what's interesting is the fact that Zsa Zsa Gabor would be his step-mother. At this point, I believe she is going to outlive that husband of hers.

http://www.reviewjournal.com/news/eric-hilton-founder-three-square-food-bank-dies-age-83