HI Merrick and Hallmark, 
Thank you both for the links.     Merrick - The Looney papers sounded great and that led me to the article in a book about  "The Shaping of the Irish Landscape as a geological study". Tthere is a whole chapter  that talks about Shanbally Castle Estate.  But it has no specifics.    I would really need to get to those originals which seems utterly impossible and improbable.    They could probably confirm some facts already known but in need of something more definite, like the position held by some of the employees and for how long.  I can try to get to one of the archives where these are now held and see what they have to say. 
Hallmark the Tipperary Studies has a 366page PDF index of those grave headstone inscriptions already done  It looks like it is all  alphabetical, so when I looked there was not one Alexander  so     that part must not yet been added.  I will keep reviewing. 
thanks again both of you.  
also I have not heard anything from the Thomas Costello person but  knowing how long the snail mail takes there is still a possibility there. 
Kind regards 
  Essnell.