In approaching the issue presented we bear in mind two historical functions of a grand jury under the common law of England adopted by what is now § 1.010. One was to accuse and thereby bring to trial those believed to have violated the law. The other, equally important but often overlooked, was to protect the citizen against unfounded accusation of crime. Conway v. Quinn, 168 S.W.2d 445, 446[1] (Mo.App.1942). In State ex rel. Lashly v. Wurdeman, supra, 187 S.W. at 259, this court, speaking of grand juries, said: "That body is a component part of the court, existed at common law, and is recognized in the Cons ution, where some of its duties are specified. Its creation and duties are provided for by statutes. The grand jury is a great inquisitorial body, originally designed to vindicate the law and to protect the body of the people from the encroachments of arbitrary power. It is a necessary adjunct of all courts charged with the enforcement of the criminal law." See also State ex rel. Hall v. Burney, 229 Mo.App. 759, 84 S.W.2d 659, 664[5] (1935).