Franklin DeWitt is married Mrs. Barrett in Super Special #12 Here Come the Bridesmaids!. He has four children: Lindsey, Taylor, Madeleine, and Ryan from his first marriage to an unknown woman. The BSC sends two baby-sitters to the DeWitt/Barrett house because there are more than four children at a time (the same rule applies at the Pike house).
Mr. DeWitt is a prompt and organized person.
He has no relation to the in Palo City, California.