Mason Disick, Born December 2009
Mason Dash Disick is the first child of Kourtney Kardashian and ex-boyfriend Scott Disick. Kourtney opened up about choosing his name in a 2010 interview, saying that an aunt told her that "Mason means the same thing in English that Kardashian means in Armenian — stoneworker." And contrary to popular belief, his middle name doesn't come from the clothing stores that Kourtney and her sisters share. "That would be stupid," Kourtney said. "Dash is short for Kardashian, and it was my father's nickname."