| Name | Graveyard / Cemetery / Burial Ground |
| |
| Mathews George | Arvagh Church of Ireland County Cavan |
| Mathews John | Belturbet Church of Ireland County Cavan |
| Matthew William H | Belturbet Church of Ireland County Cavan |
| Matthews Bernard | Virginia Old RC Graveyard County Cavan |
| Matthews Bridget | Virginia Old RC Graveyard County Cavan |
| Matthews Charles | Mullagh RC Churchyard County Cavan |
| Matthews James | Virginia Old RC Graveyard County Cavan |
| Matthews Kitty | Virginia Old RC Graveyard County Cavan |
| Matthews Margaret J | Virginia Old RC Graveyard County Cavan |
| Matthews Mary | Mullagh RC Churchyard County Cavan |
| Matthews Nellie | Virginia Old RC Graveyard County Cavan |
| Matthews Vincent | Virginia Old RC Graveyad County Cavan |
| Mawn Rose | Doobally RC Church County Cavan |
| Maxwell Charlotte | Ballymachugh Church of Ireland County Cavan |
| Maxwell Harriett E | Ballymachugh Church of Ireland County Cavan |
| Maxwell Richard | Ballymachugh Church of Ireland County Cavan |
| May Brian | Drumalee RC Church County Cavan |
| May Edward | Drumalee RC Church County Cavan |
| May Patrick | Drumalee RC Church County Cavan |
| May Rose A | Drumalee RC Church County Cavan |
| Maye Joseph | Swanlinbar Church of Ireland County Cavan |
| Mayne Elizabeth | Belturbet Church of Ireland County Cavan |
| Mayne Elizabeth M | Belturbet Church of Ireland County Cavan |
| Mayne Thomas | Belturbet Church of Ireland County Cavan |
| Mayne Thomas W | Belturbet Church of Ireland County Cavan |
| Meade Marie | Raffony RC Graveyard County Cavan |
| Mee Bernard | Urney RC Church County Cavan |
| Mee Bridie | Urney RC Church County Cavan |
| Mee Elizabeth | Cloverhill Church of Ireland County Cavan |
| Mee George | Cloverhill Church of Ireland County Cavan |
| Mee Margaret | Urney RC Church County Cavan |
| Mee Mary A | Annagh Protestant Graveyard County Cavan |
| Mee Robert | Cloverhill Church of Ireland County Cavan |
| Mee Sarah Balfour | Belturbet Church of Ireland County Cavan |
| Mee Seamus | Urney RC Church County Cavan |
| Mee William | Annagh Protestant Graveyard County Cavan |
| Mee William | Cloverhill Church of Ireland County Cavan |
| Mee William R | Cloverhill Church of Ireland County Cavan |
| Megahey Richard W | Killinagh Church of Ireland County Cavan |
| Mervyn Mary A | Redhills Church of Ireland County Cavan |
| Mervyn William H | Redhills Church of Ireland County Cavan |
| Milligan Frederick | Swanlinbar Church of Ireland County Cavan |
| Milligan George A | Swanlinbar Church of Ireland County Cavan |
| Milligan Mabel B | Swanlinbar Church of Ireland County Cavan |
| Mills Adrian | Derrylane Church of Ireland County Cavan |
| Mills Frances | Derrylane Church of Ireland County Cavan |
| Mills Francis | Derrylane Church of Ireland County Cavan |
| Mills James | Derrylane Church of Ireland County Cavan |
| Mills Kate | Derrylane Church of Ireland County Cavan |
| Mills Olivia | Derrylane Church of Ireland County Cavan |
| Mills Reginald | Derrylane Church of Ireland County Cavan |
| Mills William | Derrylane Church of Ireland County Cavan |
| Mitchell Emily H | Cloverhill Church of Ireland County Cavan |
| Mitchell Louisa B | Cloverhill Church of Ireland County Cavan |
| Mitchell William J | Virginia Church of Ireland County Cavan |
| Moffitt Deria | Swanlinbar Church of Ireland County Cavan |
| Moffitt Robert | Swanlinbar Church of Ireland County Cavan |
| Moir Donhold | Virginia Church of Ireland County Cavan |
