So, I've updated the page with date ranges and links to the catalogue entries so that you can find the microfilm references that you would need to order to hunt for your own wills. I've also included details of how to track down possible wills via the various different will calendars that might apply to Irish ancestors. It might well take quite a bit of effort to track them down, but once you do find a will, it can be a mine of information on relations and can even give you a glimpse of personality behind the legalese - was 4x great uncle Richard a bit of a hypochondriac perhaps?!
"In the Name of God Amen I, Richard Dreaper, of Castlecomer in the County of Kilkenny, being sick of body but of sound mind do make this my last will and testament ..."