| Last Name | Given Name | Year | Page |
| Machling | Dewalt | 1817 | 105 |
| Maginnis | Francis | 1803 | 145 |
| Mansfield | William | 1830 | 235 |
| Marchand | Frederick | 1803 | 147 |
| Marker | Adam | 1825 | 207 |
| Markle | David | 1828 | 223 |
| Markle | John | 1822 | 189 |
| Markle | John (Esq) | 1826 | 213 |
| Marmie | Peter | 1823 | 195 |
| Marshall | James | 1802 | 145 |
| Marshall | Robert | 1822 | 186 |
| Marshall | Robert | 1828 | 226 |
| Marshall | William | 1806 | 165 |
| Marshall | William | 1828 | 224 |
| Martin | David | 1783 | 40 |
| Martin | Edward | 1784 | 42 |
| Martin | George, Jr. | 1797 | 128 |
| Martin | George, Sr. | 1797 | 128 |
| Martin | John | 1817 | 106 |
| Martin | Peter | 1812 | 188 |
| Masewell | William | 1795 | 151 |
| Mathews | Jane | 1818 | 111 |
| Mathews | John | 1828 | 223 |
| Mathews | William | 1813 | 82 |
| Matson | Uriah | 1826 | 211 |
| Maxwell | Alexander | 1783 | 37 |
| Mayer | John, Dr. | 1817 | 106 |
| Mayginnis | Philip | 1828 | 225 |
| McAnnulty | William | 1803 | 148 |
| McAnulty | John | 1793 | 155 |
| McAuly | Nancy | 1815 | 96 |
| McBride | Andrew | 1793 | 155 |
| McBride | Roger | 1778 | 8 |
| McBrier | David | 1824 | 201 |
| McCaferty | James | 1813 | 87 |
| McCall | Mary | 1820 | 180 |
| McCall | Richard | 1813 | 85 |
| McCall | Stephen | 1813 | 85 |
| McCall | Thomas | 1816 | 102 |
| McCallister | Daniel | 1803 | 143 |
| McCally | David | 1818 | 112 |
| McCally | Ezeriah | 1791 | 62 |
| McCarthy | John | 1829 | 229 |
| McCartney | Elizabeth | 1827 | 218 |
| McCaw | William | 1776 | 123 |
| McClain | Alexander | 1826 | 209 |
| McClain | Archibald | 1818 | 110 |
| McClain | John | 1826 | 212 |
| McClarrin | William | 1817 | 107 |
| McClelland | John | 1791 | 61 |
| McClelland | John | 1819 | 119 |
| McClelland | Mary | 1819 | 177 |
| McClelland | William | 1797 | 129 |
| McClelland | William | 1822 | 189 |
| McClintick | Alexander | 1819 | 176 |
| McClintock | John | 1805 | 159 |
| McClosky | Michael | 1825 | 208 |
| McClure | Thomas | 1818 | 112 |
| McClurg | Joseph | 1824 | 202 |
| McColley | Choreis | 1815 | 99 |
| McColly | Zachariah | 1821 | 184 |
| McConnell | David | 1829 | 229 |
| McConnell | Sarah | 1798 | 130 |
| McCormick | John | 1779 | 18 |
| McCormick | Joseph | 1802 | 144 |
| McCoy | Charles | 1796 | 126 |
| McCoy | John | 1775 | 6 |
| McCoy | Joseph | 1803 | 142 |
| McCoy | William | 1799 | 140 |
| McCracken | John | 1813 | 84 |
| McCracken | Margaret | 1779 | 14 |
| McCrea | John | 1827 | 218 |
| McCready | Alexander | 1803 | 149 |
| McCue | John | 1818 | 115 |
| McCue | John | 1785 | 159 |
| McCullock | Elizabeth | 1801 | 134 |
| McCullough | David | 1825 | 207 |
| McCurdy | Ebenazar | 1800 | 133 |
| McCurdy | John | 1805 | 160 |
| McCutcheon | John | 1829 | 231 |
| McCutcheon | William | 1783 | 41 |
| McDonald | Archibald | 1830 | 235 |
| McDonald | Dennis | 1783 | 38 |
| McDonald | Hannah | 1827 | 217 |
| McDonald | John | 1830 | 235 |
| McDonald | Martin | 1779 | 19 |
| McDonnald | John | 1798 | 131 |
| McDowel | Alexander | 1783 | 39 |
| McDowell | Alexander | 1793 | 154 |
| McDowell | James, Esq. | 1829 | 226 |
| McDowell | Mathew | 1803 | 143 |
| McDowell | William | 1780 | 21 |
| McElroy | James | 1806 | 165 |
| McFadden | John | 1813 | 88 |
| McFarling | David | 1814 | 93 |
| McGeary | John | 1822 | 186 |
| McGoogan | Robert | 1828 | 220 |
| McGral | John | 1814 | 94 |
| McGready | James | 1822 | 188 |
| McGreagor | John | 1801 | 134 |
| McGrew | Alexander | 1790 | 60 |
| McGrew | Dinah | 1819 | 178 |
| McGrew | Finley | 1813 | 86 |
| McGrew | Finley, Jr | 1803 | 142 |
| McGrew | Isabella | 1797 | 127 |
| McGrew | William | 1792 | 157 |
| McGuire | James | 1825 | 206 |
| McGuire | John | 1807 | 170 |
| McGuire | John | 1814 | 91 |
| McGuire | Samuel | 1824 | 198 |
| McHarg | Ann | 1807 | 170 |
| McHenry | Melchorn | 1800 | 135 |
| McIlwaine | Alexander | 1822 | 188 |
| McIntire | James | 1810 | 69 |
| McKain | Henry | 1793 | 154 |
| McKapherson | Patrick | 1827 | 217 |
| McKay | Samuel | 1788 | 57 |
| McKean | Hugh | 1798 | 130 |
| McKee | Archibald | 1773 | 2 |
| McKee | David | 1804 | 163 |
| McKee | David | 1814 | 92 |
| McKee | John | 1784 | 42 |
| McKee | Robert | 1782 | 26 |
| McKee | Robert | 1823 | 197 |
| McKee | Samuel | 1780 | 22 |
| McKee | Thomas | 1786 | 53 |
| McKee | William | 1792 | 157 |
| McKellen | Edward | 1797 | 127 |
| McKelvey | James | 1825 | 208 |
| McKelvey | John | 1810 | 70 |
| McKelvey | Samuel | 1816 | 103 |
| McKessock | John | 1805 | 161 |
| McKessock | Robert | 1822 | 187 |
| McKiney | Hugh | 1809 | 64 |
| McKinley | Hugh | 1813 | 84 |
| McKinley | John | 1782 | 35 |
| McKinley | John | 1783 | 38 |
| McKinstry | William | 1802 | 146 |
| McKinvin | Daniel | 1795 | 150 |
| McKinzey | William | 1793 | 155 |
| McKissack | Isaac | 1830 | 236 |
| McKown | Robert | 1820 | 179 |
| McLaughlin | Charles | 1808 | 172 |
| McLaughlin | Hugh | 1780 | 22 |
| McLaughlin | John | 1779 | 15 |
| McMichal | Samuel | 1815 | 100 |
| McMillen | John | 1807 | 171 |
| McMillen | Robert | 1823 | 194 |
| McNees | Alexander | 1786 | 122 |
| McNeese | Alexander | 1774 | 5 |
| McNeice | Alexander | 1786 | 51 |
| McQuade | Patrick | 1809 | 65 |
| McQuilkin | John | 1783 | 37 |
| McQuire | Archibald | 1809 | 66 |
| McQuiston | James | 1804 | 164 |
| McQuiston | Robert | 1813 | 86 |
| McQuown | James | 1809 | 65 |
| McVey | Mary | 1822 | 191 |
| McWilliams | James | 1820 | 182 |
| Means | Francis | 1786 | 51 |
| Mechling | Simon | 1830 | 235 |
| Medscar | Frederick | 1824 | 199 |
| Meeks | Jeremiah | 1783 | 41 |
| Melaley | Edward | 1783 | 39 |
| Mellinger | John | 1803 | 143 |
| Mellinger | John | 1828 | 219 |
| Mellinger | William | 1802 | 146 |
| Menoher | John | 1819 | 120 |
| Mercer | Edward | 1802 | 146 |
| Meriden | Susanna | 1791 | 62 |
| Mickey | Daniel | 1775 | 6 |
| Mickey | Daniel | 1812 | 77 |
| Mickey | John | 1829 | 228 |
| Mickey | John | 1829 | 230 |
| Mickey | Robert | 1815 | 87 |
| Mickey | William | 1814 | 93 |
| Millen | Hugh | 1819 | 178 |
| Miller | Alexander | 1781 | 25 |
| Miller | Isaac | 1805 | 161 |
| Miller | John | 1779 | 15 |
| Miller | John | 1791 | 62 |
| Miller | Leonard | 1820 | 181 |
| Miller | Nicholas | 1804 | 158 |
| Miller | Nicholas | 1826 | 214 |
| Miller | Robert | 1775 | 6 |
| Miller | Samuel | 1778 | 12 |
| Miller | William | 1818 | 113 |
| Milligan | John | 1804 | 162 |
| Millin | Michael | 1812 | 75 |
| Milliron | Anthony | 1805 | 160 |
| Milliron | John | 1808 | 170 |
| Mires | Christopher | 1788 | 57 |
| Mitchel | Andrew | 1827 | 216 |
| Mitchell | William | 1784 | 42 |
| Momyer | Jacob | 1829 | 228 |
| Montgomery | Archibald | 1791 | 64 |
| Montgomery | Henry | 1818 | 116 |
| Montgomery | James | 1786 | 121 |
| Montgomery | John | 1781 | 123 |
| Montgomery | John | 1781 | 1 |
| Montgomery | John | 1826 | 210 |
| Montgomery | Joseph | 1829 | 227 |
| Montgomery | Thomas | 1786 | 51 |
| Montgomery | William | 1825 | 205 |
| Montgomery | William | 1826 | 211 |
| Moore | James | 1818 | 111 |
| Moore | James | 1819 | 118 |
| Moore | John | 1773 | 3 |
| Moore | John | 1778 | 13 |
| Moore | John | 1779 | 20 |
| Moore | John | 1825 | 205 |
| Moore | Thomas | 1813 | 83 |
| Moorhead | Alexander | 1798 | 131 |
| Moorhead | John | 1785 | 50 |
| Moorhead | Michael | 1817 | 108 |
| Moorhead | Samuel | 1801 | 135 |
| Morrison | James | 1783 | 37 |
| Morrison | John | 1818 | 114 |
| Morrison | Thomas | 1809 | 67 |
| Morrow | David | 1812 | 78 |
| Morrow | Jac | 1787 | 54 |
| Mount | William | 1778 | 13 |
| Mounts | Joseph | 1782 | 29 |
| Mowyer | William | 1817 | 105 |
| Moyer | Jacob, Sr. | 1804 | 164 |
| Moyer | John | 1829 | 231 |
| Moyers | Francis | 1808 | 172 |
| Moyrs | Jacob | 1810 | 70 |
| Mulhollaw | John | 1830 | 232 |
| Muma | Barbara | 1828 | 219 |
| Muma | Catharine | 1827 | 215 |
| Murdock | John | 1812 | 76 |
| Murdock | Robert | 1775 | 6 |
| Murphy | John | 1828 | 222 |
| Murphy | Moses | 1825 | 203 |
| Mykrants | Henry | 1795 | 151 |
| Myler | Robert | 1825 | 204 |
| Myler | William | 1830 | 231 |
Westmoreland County, PA