Thank you for the reply. It is possible that there might not have been anyone living in Cloonsheever at the time. I guess that I assumed that there must be at least one person living in each townland. It is poor land so might have been avoided for a long time. I actually bought the census from the Manuscript Commission. There are 84 townlands listed with some repeating. It seems to encompass a large area from Loughglynn to Castleplunkett. These are the townlands listed in Tibohine parish:
1. Frenchpark
2. Turlogh (could be Turlagharee or Turlaghnamaddy)
3. Rakery (Rathkeery)
4. Ratra
5. Ochorin (Aghacurreen)
6. Caranruddy (?)
7. Mullin (Mullen)
8. Cooldavin (? recorded in an 1814 directory)
9. Aghalour
10. Cloonard
11. Cloonfinglas
12. Carokeel (lots of Carrowkeel townlands but I'm not sure if there are any in the Tibohine area, maybe Parkeel?)
13. Edon (Eden)
14. Cloonarra (Cloonarragh)
15. Taunirover (Tawnyrover)
16. Kilgarive (Kilgarve)
17. Lisananny (Lissananny)
18. Tullynashoge (an old name for Tully?)
19. Cloondart
20. Cornehulty (?)
21. Derrinomekan (Derreenamackaun)
22. Gortiganny (Gortaganny)
23. Carabehy (Carrowbehy)
24. Cooligary (Coolgarry)
25. Loughglin (Loughglynn)
26. Legatinty
27. Cloonshanvil (Cloonshanville)
28. Curska (Corskeagh)
29. Carogarive (Carrowgarve)
30. Errit
31. Caronhard (?)
32. Lisergool (Lissergool)
33. Balimagarra (?)
34. Kilteboe (Cuiltyboe)
35. Cahir (Caher)
36. Errit (Errit)
37. Balliglass (Ballyglass)
38. Clontorwart (Cloontowart)
39. Derreen (Derrinea)
40. Caronokneran (Carrownaknockaun)
41. Curroghsallow (Curraghsallagh)
42. Creevy
43. Erizan (?)
44. Cloonaraget (Cloonargid)
45. Taunadrisoge (When I look it up, a paper appears from NUIG. It's in Irish so I can't be sure that I understand it correctly but page 114 of document/131 of pages seems to record what the townland was known as down through the years. The last year was 1738 and it was recorded as Tawnedrishoge alias Curraghsallagh in 1663 so maybe it is part of Curraghsallagh now. Actually, the literal translation of Taunadrisoge is arable place of briers so it could be Briarfield)
46. Curraghsalla (Curraghsallagh)
47. Lisadely (Lissydaly)
48. Cloonicaly (Cloonacolly)
49. Kiltemane (Kiltymaine)
50. Tullileag (?Could also be Tully. I can't read the full article https://www.jstor.org/stable/25535341 but it mentions Telach/Tulach Liag in relation to St. Patrick with the quote "as dwelling in Tullileag townland in the parish of Tibohine in Airteagh. This townland must therefore have been very small."
51. Kiltebranly (Kiltybranks)
52. Aghadriston (Aghadrestan)
53. Clooncagh (Clooncah)
54. Caracummeen (Corracommeen)
55. Drummot (Drummad)
56. Aghaderry
57. Fiegh (Figh)
58. Cartoun (Cartron)
59. Edon (Eden)
60. Curriturpane (Curreentorpan)
61. Barnecaly (Barnacawley)
62. Moyne
63. Corroghoghil (Corracoggil)
64. Clegarna (?)
65. Kilruddan (Kilroddan)
66. Tenecreevy (Teevnacreevy)
67. Ballinfull (Ballinphuill)
68. Tibohin (Tibohine)
69. Lisahark (Lissacurkia)
70. Cloonfad
71. Mullinashee (Mullaghnashee)
72. Grallagh
73. Letrym (Leitrim)
74. Lisdoo (Lisduff)
75. Balliglass (Ballyglass)
76. Bockil (Buckill)
77. Listrumneal (Lisdrumneill)
78. Driney
79. Cloonmullen (Cloonmullin)
80. Clonbounogh (Cloonbunny)
81. Drumenagh (Druminagh)
82. Cleragh (Clerragh)
83. Bryanmore (Breanamore)
84. Raheely/Rahealy (Rahelly)
That leaves around 8 townlands that I can't match up with a modern name for a townland.