I can find no saint by the name of Leona. However, the name derives from the name Leo and there are numerous saints by that name.
Leona Roberts's birth name is Leona Harneteaux.
Do you mean Leona Lewis.
Leona Lewis's full name is Leona Louise Lewis.
Leona Surles's birth name is Leona Elicia Surles.
Leona Cassin's birth name is Leona Lynn Cassin.
Leona Irwin's birth name is Leona Ruth Irwin.
Leona Helmsley's birth name is Leona Mindy Rosenthal.
Leona Fisk's birth name is Leona Elizabeth Lundin.
Leona Gage's birth name is Mary Leona Gage.
Leona Lewis's birth name is Leona Louise Lewis.
Michael Leona's birth name is Michael Francis Leona.
Leona Lewis's full name is Leona Louise Lewis.