Thanks to both of you Ann and Pat yes I already have both those references. The reference to the article "Notes and Gleanings etc" is where I found the castles occupied by the Sinnotts my family however it is not totally correct actually Artramount castle was the home of the Roche family so I am a little sceptical of some of the other castles attributed to other families. As for the grid reference it is very difficult to discern where the map reference actually is when the google map does not enlarge enough to get a perspective but I have seen this reference and I have contacted the photographers who have taken photographs nearby to see if any of them have contacts in the area that could help me.
I would love to have contact with the locals in the area but not many of the townlands have websites so it is difficult contacting any one nearby.
Thanks again Sue