What is a man who manages or settles the estate of an intestate, or of a testator when there is no competent executor; one to whom the right of administration has been committed by competent authority called?

administrator — (Law) A man who manages or settles the estate of an intestate, or of a testator when there is no competent executor; one to whom the right of administration has been committed by competent authority. (Webster's 1913.)