How Did Katherine Johnson’s Third Child Die?

Katherine Johnson’s third child, Joylette Hylick, did not die. Joylette Hylick is one of Katherine Johnson’s three daughters. Katherine Johnson, the renowned mathematician whose work was pivotal in NASA’s early space missions, had three daughters: Constance, Joylette, and Katherine. All three daughters survived their mother, who passed away in 2020 at the age of 101.