While Donald Trump has four children from his two previous marriages, Donald and wife, Melania, have just one son together. Barron is 10-years-old and stays out of the spotlight much more than his older siblings given his young age. There is a 24 year age difference between Barron’s parents. Donald is 70 years old while Melania is 46. Donald, Jr., Ivanka and Eric are all from his first marriage with Ivana Trump.