Royal Family Tree: A Guide to Queen Elizabeth II's Kids and Grandkids
Prince William and Kate Middleton, the Duke and Duchess of Cambridge
Born June 21, 1982, Prince William is the third-eldest grandchild of Queen Elizabeth II, and the second in line to the throne. In April 2011, he married Kate Middleton. A little less than two years later, the Duke and Duchess of Cambridge announced they were expecting their first child in July 2013; the baby-to-be will be third in line to the throne, bumping William's brother Harry to fourth.