Per genealogy library reference book, the following individuals owned one or more acres of land in Co. Londonderry, Ireland, (Derry), the latter part of the 1870s. Note, an unusual first or middle name may be the surname of a related family.

1. Andrew M'Gowan, address Ballinderry, Tobermore,
owned 207 acres.
2. David M'Gowan, same address, owned 1 acre.
3. Henry M'Gowan, same address, owned 40 acres.
4. Samuel M'Gowan, address Duntibryan, Tobermore, owned 47 acres.
5. Samuel M'Gowan, MD, address 15, King-street, Oldham, England, also owned 47 acres.
6. Wm. S. M'Gowan, address Grange, Magherafelt, owned 131 acres.
7. Eliza M'Grogan, address 15, Chichester-street, Belfast, owned 107 acres.
8. Robert M'Gucken, address Lake Lodge, Ballyronan, Magherafelt, owned 151 acres.
9. John M'Ildowney, address Clare Park, Ballycastle,
owned 87 acres.
10. John M'Ilroy, address Drummullen, Moneymore, owned 6 acres.
11. R. M'Ilwaine, Reps. of, address Londonderry, owned 10 acres.
12. John M'Intyre, address Cockendollogh, Garvagh,
owned 12 acres.
13. William M'Intyre, address Warwick Lodge, Ballymaguigan, Castledawson, owned 982 acres.
14. James M'Kay, address Newtownlimavady, owned 10 acres.
15. Jane M'Kay, address Society-st., Coleraine, owned 6 acres.
16. John M'Kay, address Drum, Dungiven, owned 104 acres.
17. Neal M'Kay, address Artikelly, Newtownlimavady,
owned 208 acres.
18. Samuel M'Kay, address Ballymore, Newtownlimavady, owned 208 acres.
19. Thomas M'Kay, address Killygullib, owned 26 acres.
20. James M'Kee, address Drummullen, Moneymore, owned 20 acres.
21. James M'Kendry, address Hillhead, Castledawson,
owned 138 acres.
22. John M'Kendry, address Leitrim, Castledawson, owned 8 acres.
23. George M'Kenna, address 19, Lincoln-place, Dublin, owned 155 acres.
24. Henry M'Kenna, address Ballynacross, Maghera, owned 20 acres.
25. James M'Kenna, Reps. of, address Termoney, Maghera, owned 11 acres.
26. John M'Kenney, address Kilfinan, Waterside, owned 68 acres.
27. John M'Kenney, no address given, owned 30 acres.
28. William M'Kenney, address Ballymacpeake, Bellaghy, owned 23 acres.
29. Neal M'Keon, Jr., address Killygullib, owned 5 acres.
30. Joseph M'Keown, address Curragh, Maghera, owned 19 acres.
31. Nicholas M'Keown, address Corick, Draperstown,
owned 123 acres.
32. Robert M'Keown, address Curragh, Maghera, owned 25 acres.
33. William M'Keown, address Ennisrush, Portglenone,
owned 15 acres.
34. William M'Keown, address Curragh, Maghera, owned 8 acres.
35. Patrick M'Kernan, address Largantogher, Maghera,
owned 5 acres.
36. James T. Mackey, address Londonderry, owned 116 acres.
37. John Mackey, address Ballynagallagh, owned 104 acres.
38. Alex. M'Laughlin, address Glenleary, Coleraine,
owned 214 acres.
39. Daniel M'Laughlin, address Ballyness, Dungiven,
owned 117 acres.
40. Rev. James M'Laughlin, address Chicago U.S.A.,
owned 10 acres.
41. James M'Laughlin, address Newtownlimavady, owned 252 acres.
42. John M'Laughlin, address Killygullib, owned 1 acre.
43. John M'Laughlin, Reps. of, address Bonaboigh, Dungiven, owned 16 acres.
44. William M'Laughlin, address Dromore, Newtownlimavady, owned 5 acres.
45. George M'Loughlin, address Tonduff, owned 79 acres.
46. Archibald M'Master, address Curran, Magherafelt,
owned 18 acres.
47. Hugh M'Master, address Toberhead, Magherafelt,
owned 16 acres.
48. Robert M'Master, same address, also owned 16 acres.
49. Robert M'Morris, address Monncunningham, owned 92 acres.
50. Sir E. W. Macnaghten, Bart., address Dundarave, Bushmills, owned 227 acres.
51. Joseph M'Namee, address Owenreagh, Draperstown,
owned 20 acres.
52. Archd. M'Neese, address Toberhead, Magherafelt,
owned 16 acres.
53. Edward M'Neill, address Castle, Ballymena, owned 511 acres.
54. Daniel M'Peake, address Ballymacpeake, Bellaghy,
owned 14 acres.
55. Eliza M'Peake, same address, owned 13 acres.
56. William M'Peake, same address, owned 9 acres.
57. James M'Quillan, address Ballyneese, Portglenone, owned 17 acres.
58. James M'Quillan, Sr., address Ballymacombs, Bellaghy, owned 20 acres.
59. James M'Quillan, Jr., address Ballymacombs, Bellaghy, owned 20 acres.
60. William M'Quillan, same address, owned 19 acres.
61. Robert Macrory, address Ardmore, Newtownlimavady, owned 802 acres.
62. William M'Runnell, address Killygullib, owned 14 acres.
63. William M'Shane, also Killygullib, owned 6 acres.
64. James M'Sparron, address Feeny, owned 186 acres.
65. John M'Teague, address Grange, Magherafelt, owned 8 acres.
66. James M'Vey, address Moneydig, Garvagh, owned 28 acres.
67. John M'Vey, same address, owned 6 acres.
68. George M'Whinney, address Leitrim, Castledawson,
owned 2 acres.
69. James S. M'Whinney, Reps. of, address Curran, Magherafelt, owned 18 acres.
70. Robert M'Whinney, address Leitrim, Castledawson,
owned 8 acres.
71. Thomas M'Whinney, address Lenmaroy, Castledawson, owned 24 acres.
72. William M'Whinney, address Killyberry, Bellaghy,
owned 17 acres.
73. William M'Whinney, Reps. of, address Hillhead, Castledawson, owned 12 acres.
74. Wilson M'Whinney, address Draperstown, owned 19 acres.
75. John M'Williams, address Corick, Draperstown, owned 30 acres.
76. Daniel Madden, address Ballymacombs, Bellaghy, owned 8 acres.
77. Samuel Magill, Reps. of, address Crieve House, Cookstown, owned 357 acres.
78. James Major, address Donnybrewer, Eglington, owned 38 acres.
79. William C. Mann, address Hillhead, Castledawson,
owned 121 acres.
80. George Marlin (Big), address Curran, Magherafelt, owned 4 acres.
81. James Marlin (Big), same address, owned 5 acres.
82. Joseph Marshall, address Knocknakeilt, Maghera,
owned 86 acres.