Rose Ellen Clampett

I was going to post this on the Swedish Heritage Website but I couldnt find any...no surprise there. I am looking for information on Rose Ellen Clampett...wife of Jed Clampett and mother to Elly May. She was the daughter of Daisy "granny' Moses and she was born and grew up somewhere in the Ozarks of Arkansas but I can not find her in any census information..... I do know that Rose Ellen Clampett had died while Elly May was still very young, and her husband, Jed, raised her like a boy simply because he was ill-equipped to raise a little girl. This family moved to Beverly Hills in the 1960's Any information would be appreciated.