Lether is an unusual and striking given name, of unknown origin. It appears to have emerged in recent times as a coined name, perhaps influenced by various literary works that feature characters with similar names or titles, such as 'The Letherii' from Steven Erikson's Malazan Book of the Fallen series. The name has no known historical significance or linguistic root, making it unique and distinctive among modern baby names.
"The name Lether experienced periods of popularity with peaks in the late teens to early twenties, particularly notable in 1916 and 1924, but it was not consistently popular throughout the given time period."