| MacHale | Most Rev. John | Faartan |
| Mahan | Bryan | Rosdaul |
| Mahan | John | Rosdaul |
| Mahan | Thomas | Rosdaul |
| Mahon | Patrick | Gortnadeeve West |
| Mahon | Thomas | Gortnadeeve West |
| Mahon | Thomas | Keeloges West |
| Maley | Edward | Corgarve |
| Malley | Edward | Ballincurry |
| Malley | Edward | Glinsk |
| Mannion | Bartholomew | Ballynahowna |
| Mannion | James | Ballincurry |
| Mannion | John | Gorteenfadda |
| Mannion | John | Skehaghard |
| Mannion | Martin | Park |
| Mannion | Mary | Tallavnamraher |
| Mannion | Patrick | Boleythomas |
| Manton | James | Derryhippoo |
| McCaigue | Edmund | Leaha |
| McCaigue | James | Camderry |
| McCaigue | John | Leaha |
| McCaigue | Michael | Park |
| McClean | Francis | Creggs |
| McCormack | Barthw. | Knockmascahill |
| McCormack | Daniel | Kilcolumb |
| McCormack | James | Knockmascahill |
| McCormack | Ml. & John | Knockmascahill |
| McCormack | Roger | Moat |
| McCormack | Roger & Honoria | Moat |
| McCormack | Thomas | Moat |
| McCormick | Daniel | Keeloges East |
| McDermott | Edward | Corlackan |
| McDermott | John | Aghalateeve |
| McDermott | John | Kilmacrickard |
| McDermott | Patrick | Aghalateeve |
| McDermott | Patrick | Keeloges East |
| McDermott | Patrick | Toberroe East |
| McDermott | Timothy | Tonamaddy |
| McDonagh | James | Kilbegnet |
| McDonagh | Patrick | Curraghrevagh |
| McDonagh | Patrick | Kilbegnet |
| McDonagh | Timothy | Kilbegnet |
| McDonnell | Ellen | Keelogesbeg |
| McDonnell | Patrick | Rosdaul |
| McDonough | James | Oughtagh (Galway) |
| McDonough | Michael | Oughtagh (Galway) |
| McElroy | James | Kilmacrickard |
| McEvoy | Flan | Oughtagh |
| McGann | Mary | Keelogesbeg |
| McGarry | Michael | Clooncullaun |
| McGarry | Thomas | Funshin |
| McGovern | Bryan | Corlackan |
| McGovern | Eileen | Corlackan |
| McGovern | Thomas | Corlackan |
| McGuire | John | Bracklin |
| McGuire | Patrick | Lenanmarla |
| McKeogh | Daniel | Funshin |
| McKeogh | Edward | Funshin |
| McLoughlin | Michael | Ussey |
| McLoughlin | Patrick | Knockmascahill |
| McNeill | Timothy | Ussey |
| Mee | Bridget | Lenanmarla |
| Mee | Dominick | Cloonfaghna |
| Mee | Edward | Newtown |
| Mee | James | Ballincurry |
| Mee | James | Millford |
| Mee | John | Ballincurry |
| Mee | Martin | Cloonfaghna |
| Mee | Martin | Sonnagh |
| Mee | Mary | Carrowkeel |
| Mee | Mary | Cornaveagh |
| Mee | Mary | Dunamon |
| Mee | Owen | Lenarevagh |
| Mee | Owen | Millford |
| Mee | Patrick | Derryhippoo |
| Mee | Patrick | Sonnagh |
| Mee | Peter | Derryhippoo |
| Mee | Thomas | Lenarevagh |
| Mee | Thomas | Millford |
| Mee | William | Carrowkeel |
| Mee | William | Corgarve |
| Mee | William | Cornaveagh |
| Mee | William | Dunamon |
| Meehan | Bridget | Glinsk |
| Meehan | Connor | Oughtagh (Galway) |
| Meehan | Connor | Toberroe East |
| Meehan | James | Treanpark |
| Meehan | John | Newtown |
| Meehan | Thomas | Oughtagh (Galway) |
| Meehan | Thomas | Toberroe East |
| Miskill | John | Faartan |
| Mitchell | Bridget | Faartan |
| Mollowney | Andrew | Leaha |
| Mollowney | Bridet | Toberroe East |
| Mollowney | James | Leaha |
| Mollowney | James | Tallavnamraher |
| Mollowney | John | Gortnadeeve East |
| Mollowney | John | Leaha |
| Mollowney | Martin | Oughtagh (Galway) |
| Mollowney | Patrick | Ballincurry |
| Mollowney | Patrick | Leaha |
| Mollowney | Thomas | Keelogesbeg |
| Molowney | James | Ballincurry |
| Molowney | James | Balling |
| Molowney | Patrick | Cloonfaghna |
| Monaghan | William | Creggauns |
| Monahan | Patrick | Curraghmulmurry |
| Mooney | Hugh | Garraun North |
| Mooney | William | Ussey |
| Moore | Bryan | Rosdaul |
| Moore | Michael | Treanpark |
| Morgan | Martin | Corlackan |
| Morgan | Martin | Curraghrevagh |
| Morgan | Martin | Keeloges East |
| Morgan | Martin | Keeloges West |
| Morgan | Owen | Keeloges West |
| Morgan | Patk. & Peter | Keeloges West |
| Morgan | Thomas | Curraghbog |
| Morrissey | Martin | Millford |
| Morrissy | Andrew | Ballynahowna |
| Morrissy | Patrick | Leaha |
| Moylan | Patrick | Kilbegnet |
| Muldoon | Andrew | Gorteenfadda |
| Muldoon | Andrew | Lahaghglass South |
| Muldoon | Daniel | Rabbitpark |
| Muldoon | John | Gorteenfadda |
| Muldoon | Thomas | Gorteenfadda |
| Muldoon (of Gorteenfadda) | John | Ballynahowna |
| Mullen | Thomas | Moat |
| Mulligan | James | Gortnadeeve West |
| Mulligan | John | Clooncullaun |
| Mulligan | John | Keeloges East |
| Mulligan | John | Leaha |
| Mulligan | Martin | Clooncullaun |
| Mulligan | Michael | Clooncullaun |
| Mulligan | Patrick | Ballynahowna |
| Mulligan | Patrick | Clooncullaun |
| Mulligan | Patrick | Keeloges East |
| Mulligan | Thomas | Keeloges East |
| Mulligan | Thomas | Moat |
| Mullins | John | Moat |
| Mullins | Michael | Rabbitpark |
| Mullins | Patrick | Moat |
| Mullins | Thomas | Moat |
| Mullowney | Thomas | Clooncullaun |
| Mullowney | Thomas | Gortnadeeve West |
| Mullviihil | Michael | Funshin |
| Mullviihil | Patrick | Funshin |
| Mulremnin | Rev. Wm | Garraun North |
| Mulrennan | Mary | Treanpark |
| Mulry | Anne | Ballincurry |
| Mulry | Daniel | Ballincurry |
| Mulry | John | Ballincurry |
| Mulry | John | Derryhippoo |
| Mulry | John | Lisduff |
| Mulryan | John | Gorteenfadda |
| Mulvihil | Brian | Aghalateeve |
| Mulvihil | Bryan | Corgarve |
| Mulvihil | Denis | Ballincurry |
| Mulvihil | Hugh | Glinsk |
| Mulvihil | Hugh | Ussey |
| Mulvihil | John | Cloonfaghna |
| Mulvihil | John | Newtown |
| Mulvihil | Martin | Ballincurry |
| Mulvihil | Patrick | Keeloges East |
| Mulvihil | Patrick | Oughtagh (Galway) |
| Mulvihil (Black) | John | Cloonfaghna |
| Mulvihil (Black) | John | Glinsk |
| Mulvihil (Black) | John | Ussey |
| Mulvihil (Red) | Hugh | Cloonfaghna |
| Mulvihil (Red) | John | Glinsk |
| Mulvihil (Red) | John | Ussey |
| Murphy | Michael | Lahaghglass North |
| Murray | Hugh | Knockmascahill |
| Murray | Michael | Boggauns |
| Murray | Patrick | Knockmascahill |
| Murray | Peter | Knockmascahill |
| Murray | Thomas | Faartan |
| Murray | Thomas | Knockmascahill |