While the book was poorly researched ("piss-poor" to be blunt), at least John Wayne Wardell (Protestant) does not claim "Nauvoo" is not a Hebrew word as some (e.g., Brodie in the first edition of her book) claimed:
. . . Old Testament places names
and spiritual concepts are also transposed to the American continent. Even the
final main headquarters of Joseph Smith was named “Nauvoo,” which is the Hebrew
term for “beautiful.” (John Wayne Wardell, The Footprints of Mormonism [London:
Austin Macauley Publishers, 2025], 13)