Sec[Section] 1 Be it enacted by the people of the state of Illinois represented in the General Assembly. That the name of the Town of Chatham in the County of Whitesides, is hereby changed to that of Sterling. and the whole of the Towns heretofore known as Chatham and Sterling, shall hereafter be called and known in Law, as Sterling. Provided that the change of the name of said town of Chatham shall in no wise effect, contracts heretofore made and entered into, in relation to said Town.