Which of the creators of Ferb Fletcher was born born December 9, 1960?
Ferb Fletcher:  The character, voiced by British actor Thomas Sangster, was created by "Phineas and Ferb" co-founders Dan Povenmire and Jeff "Swampy" Marsh and first appeared in the show's pilot episode, "Rollercoaster." Jeff &quot;Swampy&quot; Marsh: Jeff "Swampy" Marsh (born December 9, 1960) is an American animator, writer, director, producer, and voice actor associated with several animated television series, most notably as the co-creator, executive producer, and voice of Major Monogram of Disney's animated series "Phineas and Ferb".
Jeff "Swampy" Marsh