Margaret Smith (℗1980 duet with Ed Ames)

CD says it’s Margaret Smith:
Internet searches imply this is Margaret Whiting. ISWC searches don’t appear to pick up a Smith. Ed Ames did perform the song Tea for two with Margaret Whiting.
Margaret Whiting’s wiki makes no reference to her being married to a Mr. Smith nor using pseudonyms. There are many Margaret Smiths.
Unfortunately checking this kind of thing is becoming more difficult (one false connection quickly becomes gospel).
Hopefully AcoustID or similar will detect if there’s no difference.