Clearnce is of American origin, derived from the Scottish surname 'Clarence'. It was popularized as a given name in the United States during the mid-20th century. The name means 'bright' or 'clear', which could symbolize clarity, lucidity, or brightness.
It seems that the name Clarence was quite popular between 1915 and 1949, with a peak in popularity during the late 1920s to early 1930s. However, after 1949, its usage dropped significantly, with fewer than 10 births per year recorded from 1950 onwards. Overall, Clarence was given to 482 babies over this span of time.