Corlust is a townland in both Armagh, Parish Ballymore, Union Banbridge and Monaghan, Monaghan Parish, Union Monaghan.
Ballyshiel was not in place names for Clare:
Ballyshiel Beg and Ballyshiel More both Townlands and both are close to Co. Clare but are in the Parish of Ballmore,Armagh.
There is also a Ballyshiel in Co. Offaly in a part that is now Co. Clare. 1975 An Irish Quarterly Review.