According to a genealogy library reference book, owners of one acre or more in Co. Monaghan, Ireland in the 1870s included:

1. John Clarke Adams, address Armagh, owned 3 acres in Co. Monaghan valued at 72 pounds.
2. Jos. Adams, address Cootehill, owned 25 acres in Co. Monaghan valued at 22 pounds.
3. Samuel Aikens, address Near Ballybay, owned 42 acres in Co. Monaghan valued at 53 pounds 10 shillings.
4. Wm. Ancketell, address Ancketell Grove, Emmyvale, owned 7,504 acres in Co. Monaghan valued at 4,304 pounds 15 shillings.
5. John Anderson, address Near Ballybay, owned 41 acres in Co. Monaghan valued at 28 pounds 10 shillings.
6. Archbishop of Armagh, address Armagh, owned 23 acres in Co. Monaghan valued at 5 pounds 15 shillings.
7. Robert Armstrong, address Castleblayney, owned 75 acres in Co. Monaghan valued at 49 pounds 5 shillings.
8. William Armstrong, no address given, owned 26 acres in Co. Monaghan valued at 20 pounds.
9. Newell Atkins, address Warrenpoint, owned 111 acres in Co. Monaghan valued at 120 pounds 10 shillings.
10. Chas. Atkinson, Reps. of, address Dublin, owned 705 acres in Co. Monaghan valued at 180 pounds 5 shillings.
11. Rev. Hans Atkinson, address The Rectory, Powerstown, Goresbridge, owned 538 acres in Co. Monaghan valued at 213 pounds 15 shillings.
12. Thomas Atkinson, address Annaghabane, Rockcorry, owned 682 acres in Co. Monaghan valued at 556 pounds 5 shillings.
13. Thomas Atkinson, address Newpark, owned 104 acres in Co. Monaghan valued at 90 pounds 10 shillings.
14. Stephen Baird, address Annamartin, Smithboro', owned 2 acres in Co. Monaghan valued at 2 pounds.
15. Bernard Bannigan, address Lattacrom, Ballybay, owned 30 acres in Co. Monaghan valued at 22 pounds 10 shillings.
16. Owen Bannigan, address Lattacrom, Ballybay, owned 30 acres in Co. Monaghan valued at 21 pounds 5 shillings.
17. Patrick Bannigan, address Lattacrom, Ballybay, owned 12 acres in Co. Monaghan valued at 8 pounds 15 shillings.
18. James Bartley, address Ballybay, owned 21 acres in Co. Monaghan valued at 19 pounds.
19. John Bartley, Reps. of, address Near Ballybay, owned 23 acres in Co. Monaghan valued at 23 pounds.
20. Miss Bartley, address Monaghan, owned 292 acres in Co. Monaghan valued at 208 pounds 10 shillings.
21. Mrs. Bartley, address Losset, Dunraymond, owned 50 acres in Co. Monaghan valued at 38 pounds 15 shillings.
22. Most. Hon., The Marquis of Bath, address 48, Berkeley-square, London, W, owned 22,762 acres in Co. Monaghan valued at 19,651 pounds.
23. Francis Battersby, address 15, Warrington-street, Dublin, owned 110 acres in Co. Monaghan valued at 103 pounds 10 shillings.
24. Mark Berry, address Portadown, owned 6 acres in Co. Monaghan valued at 4 pounds 5 shillings.
25. William H. Betty, address Kilcorran, Rosslea, owned 236 acres in Co. Monaghan valued at 191 pounds.
26. Christopher Blakely, address Stradone, owned 48 acres in Co. Monaghan valued at 34 pounds 10 shillings.
27. Hugh Blakely, address Stradone, owned 41 acres in Co. Monaghan valued at 22 pounds 15 shillings.
28. David Blizard, address Warrenpoint, Co. Down, owned 482 acres in Co. Monaghan valued at 299 pounds 10 shillings.
29. Richd. Bolton, Reps. of, address Castlering, Knockbridge, owned 1,134 acres in Co. Monaghan valued at 1,035 pounds.
30. W. W. Bond, Reps of, address Bondville, Tynan, owned 334 acres in Co. Monaghan valued at 231 pounds 10 shillings.