 Schaeffer Magdalena | | | | | | | |
 William J. Magee | | 1860 | Fairport, NY | 8 DEC 1909 | | | |
| Mary Mahoney | County Cork, Ireland | BEF 1810 | St Catharines, ON, Canada | 10 MAY 1861 | | | |
| Fern Mann | | | | | | | |
| Jenifer C. Mansh | | | | | | | |
| Matthew D. Mansh | | | | | | | |
| Mellisa A. Mansh | | | | | | | |
| Michael Mansh | | | | | | | |
| William J. Martz | | 9 Feb 1950 | Harrisburg, PA, United States | 14 Dec 2009 | |  | |
| Emma Mastaler | | | | | | | |
| Brian Masters | | | | | | | |
| Marcey Mae Masters | | | | | | | |
| Meggan Elizabeth Masters | | | | | | | |
| Morgan Aileen Masters | | | | | | | |
| Mary Jane Mateer | | | | | | | |
| Catharine Matthinger | | 14 DEC 1760 | | 24 SEP 1827 | | | |
| Nellie Mau | | | | | | | |
| Christina Mauer | | | | | | | |
| Ellen Mccormick | | | Niagara, ON, Canada | 10 AUG 1869 | | | |
| William Mccormick | | | | | | | |
| Cameron Grey Mcguire | | | | | | | |
| Catherine (Caite) Mcguire | | | | | | | |
| Daniel Mcguire | County Cork, Ireland | | County Cork, Ireland | | | | |
| Daniel Mcguire | | | | | | | |
| Daniel Mcguire | Cork, Ireland | 23 April 1810 | St Catharines, ON, Canada | 8 MAY 1899 | | | |
| Daniel Eugene Mcguire | St Catharines, ON, Canada | 15 Jul 1843 | Chicago, IL, United States | 28 May 1906 | | | |
| Daniel Martin Mcguire | | | | | | | |
| Denis Charles Mcguire | St Catharines, ON, Canada | 2 NOV 1845 | | | | | |
| Florence Louise Mcguire | Chicago, IL, United States | 4 APR 1895 | Northbrook, IL | 1965 | | | |
| Francis Mcguire | | 8 SEP 1855 | | | | | |
| Francis Daniel Mcguire | Chicago, IL, United States | 1868 | Evanston, IL, United States | 4 JUN 1924 | | | |
| Francis E. Mcguire | | | | | | | |
| Frank Edwin Mcguire | | | | | | | |
| Frederick Mcguire | | 18 OCT 1859 | | | | | |
| Helena Mcguire | | 11 DEC 1853 | | | | | |
| Henrietta Mcguire | | 7 NOV 1857 | | | | | |
| Irene Mcguire | | 1880 | | | | | |
| Jeremiah Mcguire | St Catharines, ON, Canada | 13 OCT 1847 | St Catharines, ON, Canada | 20 SEP 1850 | | | |
| John (J. Fred) Frederick Mcguire | Chicago, IL, United States | 22 JAN 1870 | Winnetka, IL, United States | 6 JUL 1943 | | | |
| Julia Mcguire | | 27 MAR 1852 | Hamilton, ON, Canada | 22 NOV 1930 | | | |
| Lillian Mcguire | | 1875 | | | | | |
| Louisa Mcguire | St Catharines, ON, Canada | 17 DEC 1861 | St Catharines, ON, Canada | 1950 | | | |
| Lucinda Mcguire | | 25 FEB 1850 | | | | | |
| Margaret Antonia Mcguire | Chicago, IL, United States | 6 NOV 1874 | | 21 OCT 1925 | | | |
| Mary Ann Mcguire | Ireland | 25 FEB 1839 | St Catharines, ON, Canada | 3 JUL 1863 | | | |
| Mason Mcguire | | | | | | | |
| Michael Mcguire | Ireland | | Chicago, IL, United States | 23 JUN 1888 | | | |
| Michael Mcguire | St Catharines, ON, Canada | 2 SEP 1841 | St Catharines, ON, Canada | 20 Aug 1842 | | | |
| Morgan Mcguire | | | | | | | |
| Nicolas (Nick) John Mcguire | | | | | | | |
| Patricia Mcguire | | | | | | | |
| Quinn Oxford Mcguire | | | | | | | |
| Remington Chase Mcguire | | | | | | | |
| Robert Nicholas Mcguire Jr. | | | | | | | |
| Robert Nicholas Mcguire | Evanston, IL, United States | 21 Jan 1917 | Winnetka, IL, United States | 25 Apr 1994 | | | |
| Walter John Mcguire | | DEC 1893 | | AFT 1943 | | | |
| Walter John Mcguire Jr. | | 19 DEC 1915 | | SEP 1973 | | | |
| Walter John Mcguire III | | | | | | | |
| William Anthony Mcguire | | | | | | | |
| William A. Mcguire | Niagara, ON, Canada | 8 SEP 1841 | Chicago, IL, United States | 29 FEB 1904 | | | |
| Tiffanie Mckee | | | | | | | |
| Ann Mckindley | Galway, Saratoga, NY, United States | 1800 | | 1817 | | | |
| Belle Mckindley | | 1849 | | 1867 | | | |
| Ednah Louise Mckindley | Mexico, Oswego County, NY, United States | 23 DEC 1888 | Troutdale, Multnomah, OR | 1980 | | | |
| Elizabeth Mckindley | | | | | | | |
| Francis Lane Mckindley | | 1817 | | 1896 | | | |
| Fred Mckindley | Mexico, Oswego County, NY, United States | 21 JUN 1880 | | | | | |
| Howard C. Mckindley | Mexico, Oswego County, NY, United States | 1878 | | 9 JUL 1896 | | | |
| Isabella Mckindley | Galway, Saratoga, NY, United States | 1792 | | 1858 | | | |
| Jane Mckindley | | | | | | | |
| John Mckindley | Scotland | 1746 | Galway, Saratoga, NY, United States | 3 JUN 1829 | | | |
| John Mckindley | Galway, Saratoga, NY, United States | 1803 | | 1874 | | | |
| John Mckindley | Galway, Saratoga, NY, United States | 1814 | Mexico, Oswego County, NY, United States | 1887 | | | |
| Lilla Mckindley | Galway, Saratoga, NY, United States | 1804 | | 1886 | | | |
| Margaret C. Mckindley | | 1846 | | 1848 | | | |
| Margaret Maria Mckindley | | 5 OCT 1821 | | 25 FEB 1906 | | | |
| Martha Permilia Mckindley | Mexico, Oswego County, NY, United States | 1843 | | 1927 | | | |
| Mary Mckindley | Galway, Saratoga, NY, United States | 1800 | | 1877 | | | |
| Mary Ann Mckindley | | ABT 1815 | | mid 1870s | | | |
| Mary Ann Mckindley | Mexico, Oswego County, NY, United States | 1840 | | 1930 | | | |
| Moses Mckindley | Scotland | ABT 1752 | New York | 1 JUL 1791 | | | |
| Moses Mckindley | Galway, Saratoga, NY, United States | 1796 | | 1861 | | | |
| Peter Mckindley | Galway, Saratoga, NY, United States | 1788 | | 1871 | | | |
| Peter Charles Mckindley | Mexico, Oswego County, NY, United States | 13 AUG 1853 | | 1934 | | | |
| unknown Mckindley | | | | | | | |
| unknown Mckindley | | BEF 1888 | | | | | |
| William Mckindley | Galway, Saratoga, NY, United States | 8 NOV 1786 | | 1821 | | | |
| William Mckindley | | 1820 | | 1847 | | | |
| W. P. Mckinnie | | | | | | | |
| W. P. McKinnie | | | | | | | |
| Albert Mcknight | | | | | | | |
| Eleanor Mcknight | | | | | | | |
| Ann Elizabeth Mckonley | Mountville, PA | 4 MAY 1890 | Lancaster, PA, United States | 7 APR 1954 | | | |
| William Mckonley | York County, PA, United States | 29 JUN 1848 | | 21 OCT 1936 | | | |
| Martha Mclean | | | | | | | |
| Ellen Ruth McMahon | | | | | | | |
| Emily Grace McMahon | | | | | | | |
| James Charles McMahon | | | | | | | |
| John McMahon | | | | | | | |
| Joseph Coleman McMahon | Chicago, IL, United States | 21 JAN 1889 | Dixon, IL, United States | 18 FEB 1966 | | | |
| Ryan Thomas McMahon | | | | | | | |
| Thomas Mark McMahon | | | | | | | |
| Timothy Ryan McMahon | | | | | | | |
| Mary Mcvay | | | | | | | |
| Anna Marariet Merkel | | | | 1 JUN 1826 | | | |
| Isaac B Meyer | | | | | | | |
| Charles A. Miller | Gap, PA | 16 DEC 1881 | Paradise Township, PA, United States | 6 JAN 1929 | | | |
| Elizabeth Miller | | | | | | | |
| Mary Margaret Miller | Paradise Township, PA, United States | 19 OCT 1908 | Lancaster, PA, United States | MAY 1984 | | | |
| Sarah Miller | Jackson Township, Snyder County, PA | 17 APR 1838 | New Berlin, PA, United States | 17 NOV 1915 | | | |
| Sharon E. Miller | | | | | | | |
| Susan Miller | | | | | | | |
| Mildred Mitchell | | | | | | | |
| Randy Mitchell | | | | | | | |
| Aiden Matthew Mohr | | | | | | | |
| Bryan Kirk Mohr | | | | | | | |
| Mary J. Montgomery | | 1879 | | 1957 | | | |
| Ina Rue Mooney | | | | | | | |
| Elizabeth Pearle Moore | | | | 7 DEC 1991 | | | |
| Ruth Moore | | | | | | | |
| Margaret Morris | | | | | | | |
| Alan Lee Morrison | Rockford, IL | 8 JAN 1925 | | 13 MAR 2005 | | | |
| Ann Morrison | | | | | | | |
| Jamie Morrison | | | | | | | |
| Kenneth Morrison | | | | | | | |
| Michael Morrison | | | | | | | |
| Peter Morrison | | | | | | | |
| Gotthart Mory | | | | | | | |
| Peter Moser | | | | | | | |
| George Moses | | | | | | | |
| Hannah Moses | Pennsylvania | 1834 | Bloomington, IL, United States | 8 FEB 1890 |  | | |
| Sarah Moultron | | | | | | | |
| Ethel Mowery | | | | | | | |
| Blaine Mowry | | | | | | | |
| Catherine Clara Mowry | | 31 MAY 1914 | | 5 DEC 1948 | | | |
| Celestia Mowry | | | | | | | |
| Charles Augusta Mowry | | 26 NOV 1886 | | 14 OCT 1974 | | | |
| Charlotte Norine Mowry | | 28 OCT 1913 | | | | | |
| Claude Mowry | | | | | | | |
| Cynthia J. Mowry | | | | | | | |
| Denise Anne Mowry | | | | | | | |
| Denise D. Mowry | | | | | | | |
| Donald L. Mowry | | | | | | | |
| Dorothy Alberta Mowry | | | | | | | |
| Edna Mowry | | | | | | | |
| Harvey Mowry | | | | | | | |
| Helen Edna Mowry | | 3 DEC 1912 | | 29 OCT 2000 | | | |
| Ione Geraldine Mowry | | | | | | | |
| Joseph Mowry | | | | | | | |
| Maria Jean Mowry | | | | | | | |
| Reuben Mowry | | 1848 | | 1918 | | | |
| Ruth Mildred Mowry | | 1 SEP 1909 | | 31 MAR 2000 | | | |
| Elizabeth Amelia Moyer | Snyder County, PA | 1865 | Northumberland County, PA | 1945 | | | |
| Maria M. Moyer | | | | | | | |
| Mudge | | | | | | | |
| Mudge | | | | | | | |
| Alice Mudge | | | | | | | |
| Charles Mudge | | | | | | | |
| Dick Mudge | | | | | | | |
| Ellsworth Mudge | | | | | | | |
| Glen Mudge | | | | | | | |
| Herbert Mudge | | | | | | | |
| Kent Mudge | | | | | | | |
| Max Mudge | | | | | | | |
| Paul Mudge | | | | | | | |
| Brian K. Mull | | | | | | | |
| G. Scott Mull | | | | | | | |
| Rebecca E. Mull | | | | | | | |
| Ann Mumper | Monaghan Township, York County, PA, United States | 27 MAR 1803 | Dillsburg, PA, United States | 16 JAN 1867 | | | |
| Catherine Mumper | Monaghan Township, York County, PA, United States | 8 JUL 1820 | | 1 NOV 1894 | | | |
| Christina Mumper | Monaghan Township, York County, PA, United States | 15 JAN 1808 | Dillsburg, PA, United States | 31 AUG 1897 | | | |
| Elizabeth Mumper | Monaghan Township, York County, PA, United States | 8 DEC 1805 | Dillsburg, PA, United States | 9 SEP 1886 | | | |
| Elizabeth Mumper | | 1830 | | 1894 | | | |
| George Mumper | | | | | | | |
| George William Mumper | Dillsburg, PA, United States | 5 JAN 1828 | Dillsburg, PA, United States | 22 OCT 1917 | | | |
| John Mumper | Dillsburg, PA, United States | 24 JUL 1781 | Monaghan Twp., York Co., PA Buried Dillsburg, Carroll Twp., York Co., PA | 8 AUG 1863 | | | |
| John Mumper Jr. | Carroll Twp., York Co., PA | 23 FEB 1817 | Monroe Twp., Cumberland Co. Buried Churchtown, Cumberland Co., PA | 12 DEC 1886 | | | |
| Lydia Mumper | | 4 JAN 1822 | | 15 MAR 1874 | | | |
| Margaret Jane Mumper | Monaghan Township, York County, PA, United States | 10 OCT 1814 | Dillsburg, PA, United States | 16 JAN 1894 | | | |
| Maria Mumper | Monaghan Township, York County, PA, United States | 12 MAR 1810 | Buried in Chestnut Hill Cemetery, Mechanicsburg, Cumberland Co., PA | 25 AUG 1888 | | | |
| Michael Mumper | Monaghan Township, York County, PA, United States | 20 AUG 1812 | Dillsburg, PA, United States | 29 APR 1890 | | | |
| Samuel Mumper | Monaghan Township, York County, PA, United States | 16 MAR 1825 | Carroll Twp., York Co., PA | 27 JUN 1910 | | | |
| Michael Mumper (Mamper) II | | | | | | | |
| Eileen Murphy | | | | | | | |
| Margaret Myers | | | | | | | |
| Mary Myers | | | | | | | |