From the late Frank O’Mahony, solicitor, book on Kilcrohane. The print is not easy to use but it seems be 1841 and 1851.

In the townlands listed as being owned in Griffiths Valuation by the Rev. William Evanson, these were acquired in 1780 by his grandfather Nathaniel Evanson of Durrus comprising three ploughlands. This is turn was the property of the Dioceses Cork. It is listed in the account ledgers of St. Finbarrs Cathedrals of Cork now in RCB Library or National Archive Dublin. There are a number of other small areas listed, an island in Bantry Bay, Donemark, Letterlickey, Durrus, Rosscarbery, Schull. These are likely relicts of the limited Norman incursion. Generally they only got s far as Rosscarbery.

3 plowlands of Kilcrohane, Aghallamore, Dunneen [Dooneen], Killeen & Knuckroe, Parish of Kilcrohane, Barony of W Carbery. acquired by Nathaniel Evanson 1780 from Robert DelaCour now assigned to son Rev. Alleyn Evanson  and  they mortgage 1821 it to Abraham Splaine, Bandon. Note the term plougland.

Griffiths Valuation:

http://griffiths.askaboutireland.ie/gv4/z/zoomifyDynamicViewer.php?file=045051&path=./pix/045/&rs=23&showpage=1&mysession=2732457072476&width=&height=

It is interesting that the Rev. William townland Richard Tobin frequently. He is perhaps the 2nd King Tobin. Probably the only Norman name in Kilcrohane is Tobin. From him descend journalist Frank McDonnell and his brother, High Court Judge, Denis McDonnell. The Tobin line is probably the most influential local post 1800 west of Ahakista.

https://docs.google.com/spreadsheets/d/1aRTjCJ_Uko2lbEZ2JkFB9H2POqKqaN8k2bb1aLdlbmA/edit#gid=0

The Lands of Donogh O’Daly (Gearhies, Killovenoge), post Cromwell went to John Eyres, Sir Richard Hull got Maulanesky (Ahakista), In Durrus Parish Owen O’Daly’s part of Killtowne went to Sir Theophillius Jones. An undertaker from Waterford, Congrave got much of the O’Daly lands which were in turn later leased to the O’Donovan family of O’Donovans Cove.

This shows I think the O’Donovan of Ardahill, I assume when the lease expired it reverted to the Hull interest.
Did anyone come across him before:
Cornelius Mahony, Dingle, Co. Cork, Master of Science,

1728, Lease of three ploughlands and a half (F…, Donor, Foilakilly, Rinnacappal), for 25 years from 1727. at Kilcrohane from William Hull, Leamcon, Schull to Daniel Donovan, Dunmanway, Gent, witnesses Denis Donovan, Raghlahane, farmer, Thomas Donovan, Dunmanway, Gent., Mary Donovan, spinster, Dunmanway. J. St.Ledger, Cork.  Associated deed 1727 property at Kilmore (KIlmoe?) Barony of West Carbery from William Hull, Leamcon, Schull to Daniel Donovan, Dunmanway, Gent, witnesses Denis Donovan, Raghlahane, farmer, Cornelius Mahony, Dingle, Co. Cork, Master of Science, Thomas Donovan, Dunmanway, Gent., Mary Donovan, spinster, Dunmanway, Owen Lander, Kilpatrick, J. St. Ledger, Cork.  

   Type of deedDate of current deed24 May 1727VolPageMemorial 
   LDate of earlier deed     5714737734 
NoRole(s) in earlier deed(s)Role in current deed(s)Family nameForename PlaceOcc or titleA
A P1HULLWilliamofLimcorish[Leamcon?], COREsq 
B P2DONOVANDanielofDunmanway, CORGentA
C WD WMDONOVANDennisofRaghlahave, CORFarmer 
D WD WMDONOVANThomasofDunmanway, CORGent 
E WDDONOVANMaryofDunmanway, CORSpinster 
F WMST LEGERJofCo Cork  
AbstractComment for person [A] :plowlands in parish of Killcrohane, Barony of West Carbery, COR
Person [C] : 
Person [D] : 
Person [E] : 
Person [F] : 
MS  Date registered21 May 1728 Date abstract added20131102