I just received this website of the Down Survey of Ireland post Cromwell.  Some of the Baronys D/T burning are no longer available but was done so land could be removed from the Irish Catholics and given to Cromwell's soldiers, etc.  In Mayo, the barony of Murrisk and Burishoole no longer exist but if one is familiar with the area their ancestors originated, they still can see how it would have appeared, just not as detailed. It just came out.  Family in Ireland had difficulty gaining access yesterday.  I had no trouble this morning.  Enjoy!!   http://downsurvey.tcd.ie/