If you still need information on the Hardy family in Momence, I may be able to help.
There is a wonderful book by Kay Hess called "Momence the Making of a River Town." It has been reprinted by Kevin McNulty and available through amazon. kvgs.org sells an index for the book.
Isaac Hardy developed the formula for an enameling process for brick. He came from England and brought 3 sons with him. James Edward, Ernest and Ralph.
It doesn't mention Alice Armitage, but it mentions Ralph Hardy having 3 daughters, Mrs Alice Hungerford, Mrs. Gladys Hertz, Ms Irene Hardy.
Children of Ernest Hardy - Isaac , Helena, Lucille, and Grace.
Hope this helps.