A new celebrity baby is here, with the requisite odd name: Ace Knute. Jessica Simpson yesterday gave birth to her son, whose dad is fiancé Eric Johnson, People reports. Ace, whose middle name comes from Johnson's Swedish grandfather, is the couple's second child, after daughter Maxwell Drew, 1. "I didn’t grow up with a brother, and I think the unknown is really exciting. I can’t wait to have that connection with our little man," Simpson said earlier this year.