Ashtabula 1840 Census Index M
Extracted and Transcribed by Carol Page Tilson
| Surname | First Name | Township |
| MACK | EZRA | Williamsfield |
| MACK | JOHN | Shefield |
| MACOMBER | DAVID | Conneant |
| MACOMBER | MELGAR | Kingsville |
| MAHONEY | DAMIEL | Conneant |
| MAINE | THOMAS | Kingsville |
| MALBIE | WARREN | Geneva |
| MALTBY | IRA | Ashtabula |
| MALTBY | JOSEPH | Kingsville |
| MALTBY | RACHEL | Ashtabula |
| MAMRANEN | DAVID | Rome |
| MANLEY | ALINON | Andover |
| MANLEY | DANIEL | Austinburg |
| MANLEY | JABEZ | Ashtabula |
| MANLEY | JOHN | Jefferson |
| MANLEY | LEONARD | Jefferson |
| MANLEY | WARREN | Ashtabula |
| MANN | HORACE E. | Plymouth |
| MANN | JOHN | Cherry Valley |
| MANN | MERRITT W. | Plymouth |
| MANN | NEHEMIAH | Williamsfield |
| MANN | WARNER | Plymouth |
| MANN | WILLIAM W. | Plymouth |
| MANN | ZOSOCK | Plymouth |
| MANSON | ANER | Saybrook |
| MANWARRING | JOSIAH | Rome |
| MAPES | JOHN | Wayne |
| MARANVILLE | CHARLES D. | Conneant |
| MARCH | GEORGE | Windsor |
| MARCH | JAMES | Jefferson |
| MARCY | ELIJAH | Millsford |
| MARKAHM | ELIJAH | Austinburg |
| MARKELL | PETER | Geneva |
| MARKHAM | BENAJAH | Ashtabula |
| MARKHAM | JUSTIS | Ashtabula |
| MARKS | JOHN | Monroe |
| MARKS | RICHARD | Monroe |
| MARKUM | JESSE | Morgan |
| MARKUN | BETSEY | Geneva |
| MARR | EUNICE | Shefield |
| MARR | JOHN | Shefield |
| MARR | JOHN | Austinburg |
| MARR | SURPLUSS | Jefferson |
| MARSEY | AMANDA | Wayne |
| MARSHALL | MARY | Monroe |
| MARSH | DANIE | Andover |
| MARSH | EPHRAIM S. | Wayne |
| MARSH | EPHRAIM | Harpersfield |
| MARSH | HIRAM | Windsor |
| MARSH | JOHN S. | Lenox |
| MARSH | LEWIS D. | Wayne |
| MARSH | MOSES | Kingsville |
| MARSH | RODNEY | Windsor |
| MARSH | SILAS | Conneant |
| MARTHA | CHARITY | Morgan |
| MARTHER | ASARIAH | Morgan |
| MARTHUM | MARIELLAY | Morgan |
| MARTIN | JOHN A. | Kingsville |
| MARTIN | LEONARD | Windsor |
| MARTIN | THOMZA | Harpersfield |
| MARVIA | JOHN | Conneant |
| MARVIN | ALBERT H. | Rome |
| MARVIN | DANIEL | Andover |
| MARVIN | LEBBEAS | Andover |
| MARVIN | LYMAN | Andover |
| MARVIN | ORLO | Andover |
| MARVIN | SETH | Williamsfield |
| MARVIN | SYLVANUS | Andover |
| MASH | CHAUNCEY | Windsor |
| MASKELYNE | ROBERT | Ashtabula |
| MASON | AARON | Andover |
| MASON | CALVIN | Andover |
| MASON | CHRISTOPHER | Saybrook |
| MASON | GENNISON | Cherry Valley |
| MASON | GEORE | Cherry Valley |
| MASON | JOSEHP | Plymouth |
| MASON | NATHAN | Andover |
| MASON | NATHAN | Andover |
| MASSINGHAM | STEPHEN | Saybrook |
| MATCH | LEWIS | Windsor |
| MATHER | SANFORD | Saybrook |
| MATSON | LAURA | Conneant |
| MATSON | NORMAN | Conneant |
| MATSON | REUBEN | Plymouth |
| MATSON | WILLIAM | Conneant |
| MATTESON | DAVID | Jefferson |
| MATTESON | JOSIAS | Pierpont |
| MATTHEWS | BENJAMIN | Pierpont |
| MATTHEWS | JOSEPH | Morgan |
| MATTHEWS | MINERVA | Plymouth |
| MATTHEWS | SAMUEL | Rome |
| MATTHEWS | THOMAS W. | Pierpont |
| MATTHEWS | WILLIAM | Wayne |
| MATTHEWS | WILLIAM E. | Williamsfield |
| MATTOON | NOAH D. | Harpersfield |
| MAULTY | JACOB | Geneva |
| MAYNARD | WATRONS | Conneant |
| MAY | BELA | Kingsville |
| MC ADAMS | ALEXANDER | Ashtabula |
| MC ADAMS | JOSEPH | Ashtabula Borough |
| MC AFFERTY | WILLIAM B. | Ashtabula |
| MC ALLEN | JOHN | Austinburg |
| MC COLLY | NELSON | Ashtabula |
| MC COLLY | THOMSA | Ashtabula |
| MC COY | MOSES | Andover |
| MC CUIGHAN | JAMES | Saybrook |
| MC DANIEL | DANIEL | Cherry Valley |
| MC DONALD | JAMES | Ashtabula Borough |
| MC DONALD | JESSE P. | Ashtabula Borough |
| MC FALL | ROBERT | Harpersfield |
| MC FARLAND | GEORGE T. | Ashtabula |
| MC INTOSH | ECBERT | Hartsgrove |
| MC INTOSH | HILTON | Windsor |
| MC INTOSH | MYRON | Windsor |
| MC INTOSH | NEWTON | Windsor |
| MC INTYRE | STEPHEN | Jefferson |
| MC LANE | EZEKIEL | Geneva |
| MC LILLEE | LEONARD | Williamsfield |
| MC MANNERS | JOHN | Shefield |
| MC MANNERS | JOHN | Shefield |
| MC MANNING | PETER | Austinburg |
| MC MICHAEL | JOSEPH | Williamsfield |
| MC MILLAN | ROBERT | Monroe |
| MC MIN | CHARLES JR. | Harpersfield |
| MC NAIR | THOMSA | Conneant |
| MC WADE | HUGH | Ashtabula Borough |
| MCMANNERS | JOHN | Sheffield |
| MEACHAM | BUTLER | Cherry Valley |
| MEACHAM | DAVID | Conneant |
| MEADE | ERR W. | Ashtabula Borough |
| MEAD | AZEL | Jefferson |
| MEAD | HEZEKIAH | Jefferson |
| MEAD | TRUMAN W. | Jefferson |
| MEKINSKEY | AUGUSTUS | Geneva |
| MELOVE | M.N. | Geneva |
| MENDALL | AMOS | Kingsville |
| MENDELL | HIRAM | Conneant |
| MERCHANT | IRA | Saybrook |
| MERCY | HAZARD | Rome |
| MERCY | THOMAS R. | Rome |
| MEREY | CHESTER | Harpersfield |
| MERRELL | JUDSON N. | Austinburg |
| MERRELL | ROBERT | Windsor |
| MERRELL | SELAH | Andover |
| MERRILLS | NORMAN | Andover |
| MERRIMA | ELIPHIAS | Trumbull |
| MERRITTS | OLIVER | Windsor |
| MERRITT | LEONARD | Kingsville |
| MERRITT | MARSHALL | Wayne |
| MERRY | JAMES F. | Conneant |
| MESSENGER | ISRAEL | Conneant |
| MESSENGER | MILO | Monroe |
| METCALF | JAEMS JR. | Ashtabula |
| METCALF | JAMES | Ashtabula |
| METCALF | JOHN | Ashtabula |
| MILES | JOHN | Monroe |
| MILES | SAMEUL | Orwell |
| MILES | STEPHEN | Conneant |
| MILLARD | GEORGE | Wayne |
| MILLARD | SOLOMON | Ashtabula |
| MILLER | EZRA | Rome |
| MILLER | FRAVERSE A. | Rome |
| MILLER | GURDON B. | Wayne |
| MILLER | JAMES O. | Rome |
| MILLER | JEREMIAH | New Lyme |
| MILLER | JOSEPH | New Lyme |
| MILLER | JUSTUS | Windsor |
| MILLER | RICHARD | Rome |
| MILLER | THEODEUS | Colebrook |
| MILLER | WILLIAM | Saybrook |
| MILLER | WILLIAM | Harpersfield |
| MILLS | ALFORD | Harpersfield |
| MILLS | ALFRED | Morgan |
| MILLS | CLARISSA | Morgan |
| MILLS | E. | Geneva |
| MILLS | EBEN A. | Austinburg |
| MILLS | JOHN S. | Austinburg |
| MILLS | JOSEPH | Monroe |
| MILLS | JOSEPH | Austinburg |
| MILLS | LEVI | Morgan |
| MILLS | MYRON | Trumbull |
| MILLS | PELATIAH W. | Kingsville |
| MILLS | THEODORE | Andover |
| MINER | CHRISTOPHER | Wayne |
| MINER | HORI | Wayne |
| MINLOR | GEORGE H. | Ashtabula |
| MINTESTH | HUGH | Denmark |
| MITCHAM | URIAH | Kingsville |
| MITCHELL | GEORGE | Austinburg |
| MITCHELL | JAMES | Ashtabula Borough |
| MITCHELL | JEREMIAH | Monroe |
| MITCHELL | POLLY | Ashtabula |
| MITCHELL | SILAS | Kingsville |
| MITCHELL | WILLAIM | Ashtabula Borough |
| MOE | ABRAHAM | Conneant |
| MOFFITT | SAMUEL | Monroe |
| MOGLEY | HENRY | Pierpont |
| MONGER | RUFUS B. | Geneva |
| MONGON | GEORGE | Trumbull |
| MONROE | ELEAZER | New Lyme |
| MONTGOMERY | ALANSON | Harpersfield |
| MONTGOMERY | DAVID | Geneva |
| MONTGOMERY | LEVI | Harpersfield |
| MONTGOMERY | LEWIS | Geneva |
| MOON | ANSEL | Conneant |
| MOON | BENONA | Conneant |
| MOORE | AUSTIN | Austinburg |
| MOORE | GEORGE W. | Trumbull |
| MOORE | LYMAN | Windsor |
| MOORE | ROBERT | Shefield |
| MOORE | SELDON | Andover |
| MORES | JOSEPH | Trumbull |
| MOREY | SAMUEL | Saybrook |
| MOREY | SHUBAEL | Ashtabula |
| MORE | ALFRED A. | Geneva |
| MORE | HENRY H. | Trumbull |
| MORE | HENRY | Geneva |
| MORGAN | AARON | Orwell |
| MORGAN | DANIEL | Windsor |
| MORGAN | HIRAM | Plymouth |
| MORGAN | HIRAM | Windsor |
| MORGAN | SOLOMON | Windsor |
| MORLEY | WILLIAM H. | Andover |
| MORRISON | ALEXANDER | Geneva |
| MORRISON | JAMES | Geneva |
| MORRISON | MARK | Saybrook |
| MORRISON | REUBEN S. | Jefferson |
| MORRISON | WILLIAM | Geneva |
| MORSE | AMOS | Kingsville |
| MORSE | ANSEL | Williamsfield |
| MORSE | BILLINGS B. | Williamsfield |
| MORSE | CHARLES | Andover |
| MORSE | CHARLOTTE | Williamsfield |
| MORSE | ELIAS | Williamsfield |
| MORSE | JAMES | Geneva |
| MORSE | JOHN JR. | Cherry Valley |
| MORSE | JOHN | Cherry Valley |
| MORSE | MARVIN | Williamsfield |
| MORSE | PHINEAS | Kingsville |
| MORSE | ROYAL | Williamsfield |
| MORSE | SAMUEL JR. | Williamsfield |
| MORSE | SAMUEL | Williamsfield |
| MORTON | GEORGE | Conneant |
| MOSELEY | WILLIAM | Wayne |
| MOSES | ALONZO | Morgan |
| MOSES | CHARLES | Morgan |
| MOSES | JONATHAN | Morgan |
| MOSHER | ALFRED | Lenox |
| MOSLY | ROLAND | Harpersfield |
| MOSS | IVES | Kingsville |
| MOTT | C.D. | Austinburg |
| MOUGER | GIDEON | Geneva |
| MOULTON | ABIAL | Harpersfield |
| MOULTON | ALONZO | Conneant |
| MOULTON | HIRAM | Hartsgrove |
| MULLARD | JOSEPH | Hartsgrove |
| MUNGER | GEORGE D. | Kingsville |
| MUNGER | STEPHEN | Kingsville |
| MUNN | MOSES | Saybrook |
| MUNN | RALPH | Ashtabula |
| MUNSELL | ANSON | Plymouth |
| MUNSELL | HARVEY A. J. | Shefield |
| MURPHY | JOHN | Conneant |
| MURPIN | JOHN | Saybrook |
| MURRAY | JOHN A. | Ashtabula Borough |
| MURRAY | JOHN | Orwell |
| MURRAY | WILLIAM | Wayne |
| MURRON | GEORGE | Trumbull |
| MURRY | GILBERT | Conneant |
| MURRY | SAMUEL | Harpersfield |
| MUZZY | OHN S. | Cherry Valley |