There were five of them, a somewhat exceptional number: William P. Halliday, Samuel B. Halliday, Edwin W. Halliday, Henry L. Halliday, and Thomas W. Halliday.
On March 5, 1867, Halliday, David J. Baker, Jr., Alfred B. Safford, Daniel Hurd, and George D. Williamson were granted permission by the Illinois legislature to incorporate The Valley Iron Company [REF].