The other characters were Elly May 's subtly wise father , Jed Clampett ( Buddy Ebsen ) ; her feisty grandmother Daisy ( Irene Ryan ) ; and her cousin Jethro Bodine ( Max Baer Jr. ) , forever chasing women and fame . Donna Douglas played Elly May Young for many years . Actress was also in a famed ` ` Twilight Zone '' episode . She never stopped being associated with Elly May .
Donna Douglas played Elly May Young for many years . Actress was also in a famed ` ` Twilight Zone '' episode . She never stopped being associated with Elly May .