PRINCE-WILLIAM-KATE-MIDDLETON-OFFICIAL-ENGAGEMENT-It’s a boy for Kate Middleton! The Duchess of Cambridge gives birth to a baby boy! On Monday July 22, 2013 Kate Middleton delivered a healthy baby boy weighing 8 pounds 6 ounces.  The royal baby boy was delivered after about fourteen hours of labor. There are now three  heirs to the throne alive today now that the Duke and Duchess of Cambridge have had their first child.