Not found before the 1920s, and not common until the 1940s, but increasingly popular since, being borne, for example, by the American actress Cheryl Ladd (b. 1951). It appears to be a blend of Cherry and Beryl.
Southern German: 1. (Alemannic, Swabian) from a short form or pet form of the personal name Mangold. 2. (Bavarian, Austrian) from a short form of the personal name Mannhart (see Manhart). 3. (eastern) from a derivative of the Slavic male personal name Manslaw.