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.
Muslim: from a personal name based on Arabic islām ‘peace’, the name of the religion of Muslims. Islām is mentioned in several places in the Qur'an, for example at 3:19 ‘Religion with Allah is Islām (peace)’ and 5:3 ‘I have chosen for you Islām (peace) as religion’. This name is often found in combinations, e.g. Nūr-ul-Islām ‘light of Islam’.