I found searching in Co Clare using the civil parish difficult ending up with two civil parishes containing Ennistymon i.e. Clooney and Kilmanaheen, the reason I wanted the civil parishes was to search griffiths valuation and so I went going
www.askaboutireland and finding Griffiths valuation my conclusion for best speculation is
Family Name 1 CULLEN
Forename 1 THOMAS
Landlord
Family Name 2 O'BRIEN
Forename 2 DANIEL
Location
County CLARE
Barony CORCOMROE (PART OF)
Union ENNISTIMON
Parish KILMANAHEEN
Townland WOODMOUNT
Place Name WOODMOUNT
Place Type TOWNLAND
Publication Details
Position on Page 30
Printing Date 1855
Act 15&16
Sheet Number 23
Map Reference 8 This should be marked on a map and show the homestead's boundaries
the others listings [excluding the other 14 Cullen entries] include
Cullinan Thomas Caherloghan Clooney Clare
Cullinan Michael Knocknagraigue West Clooney Clare
Cullinan Michael Cullenagh Clooney Clare
Cullinan Matthew Ballycrighan Clooney Clare
Cullinan John Cullenagh Clooney Clare
Moving on 20 years there are no Cullen listed
In 1876 with at least one acre or more land rented or owned and no Cullen
Cullinan, Bridget Coolpekane, Ennistymon 36 0 20 6 0
Cullinan, John F Riverview, Ennis, Co. Clare 2,051 1 5 723 0
Cullinan, Margaret Woodstock, Ennis, Co. Clare 409 1 20 259 10
Cullinan, Patk, Maxwell, M.D. Harmony House, Ennis 966 2 20 370 10
Cullinan, Timothy Shanvoe, Ennis 545 0 35 346 10
Good luck onwards JimG