People Ex Rel. Kilduff v. Brewer

As applied to courts, jurisdiction is authority conferred by law to hear and determine controversies concerning certain subjects. Jurisdiction of the subject matter is the power to hear and determine causes of the general class to which the proceeding in question belongs, and such jurisdiction must be found in and derived from the law. (People v. Ford, 289 Ill. 550; Sumner v. Village of Milford, 214 id. 388.) As applied to a particular controversy, jurisdiction is the power to hear and determine that controversy. (People v. Ford, supra;People v. Talmadge, 194 Ill. 67.) Jurisdiction of the…