Re: "I have Robert N. WIXOM married to Drucilla SMALLEY - which is correct? Is 25 Mar 1939 Adah Betsey WIXON's death date?"
Carmel Newspapers, 5 Dec 1866, has marriage at Kent 5 Dec 1866 of Robert Wixon and Miss Persila Smally, both of Kent. When Priscilla's father died, she was called "Mrs. Edward Duck of Danbury", 1903.
I suspect Drucilla, Persila, and Priscilla Smalley are all the same person; but which is 'right', and who she is, I do not know.
Yes, 25 Mar 1939 appears to be Adah Betsey WIXON's death.