His parents began dating in 2005 and were engaged in 2009 over Thanksgiving weekend.
In June 2016, his grandfather, Bill Clinton posted a photo and the tweet reading "Aidan has made two dads very happy this Father's Day. Hillary and I are thrilled for Marc and Chelsea!"
His father, Marc Mezvinsky, is an investment banker. He has one older sister, Charlotte.
His grandfather was proceeded in the U.S. presidency by George W. Bush.