Red Ryder On Radio

What actress played The Duchess on "The Adventures Of Red Ryder" Radio Programs from 1942-1950? Some say Martha Wentworth played her! I know she was one of 3 or 4 actresses who played her in Republic and Eagle-Lion films from 1942 to the early 1950's, when Wild Bill Elliot, Alan "Rocky" Lane and Jim Bannon played Red Ryder in the movies!Marin Sais played one of them! She was western actor, Jack Hoxey's wife!I am wondering if Martha Wentworth was also the one who played "The Duches" on the radio as well?Thank you!