Bill Gates' Wife Has a Girl Tue Sep 17, 1:31 AM ET By The Associated Press SEATTLE (AP) - Microsoft Corp. Chairman Bill Gates and his wife Melinda have a third child, baby girl Phoebe Adelle Gates. The baby was born Saturday at Overlake Hospital Medical Center in suburban Bellevue. The birth was announced Monday. The baby weighed 9 pounds, 13 ounces, family spokeswoman Annemarie Hou said. "Bill and Melinda are delighted to welcome another child, and mother and daughter are both doing well," Hou said. The couple have a 6-year-old daughter, Jennifer, and a 3-year-old son, Rory.