Census records of free Black heads of household in the antebellum South
| Name | State | Num In Family | Notes |
|---|---|---|---|
| Mackery, James | Maryland | 3 | — |
| Mackery, John | Maryland | 1 | — |
| Maden, Rabeckah | Maryland | 5 | — |
| Mahuel, William | Maryland | 1 | — |
| Mamus (Negro) | Maryland | 1 | — |
| Mandear, Joseph (Negro) | Maryland | 5 | — |
| Manuel | Maryland | 3 | — |
| Margaret (free Negro) | Maryland | 3 | — |
| Maria (Negro) | Maryland | 5 | — |
| Maria (Negro) | Maryland | 4 | — |
| Martingale, James | Maryland | 5 | — |
| Mary, Free | Maryland | 2 | — |
| Mason, Joseph | Maryland | 6 | — |
| Massey, Ame | Maryland | 2 | — |
| Matheus, Nicholas | Maryland | 9 | — |
| Maxwell, James | Maryland | 1 | — |
| Mayhall, John (Mulatto) | Maryland | 1 | — |
| Mayhall, Robert (Mulatto) | Maryland | 9 | — |
| Mayson, Dinah | Maryland | 6 | — |
| McCullough, William | Maryland | 1 | — |
| McDanniel, Daniel (free Negro) | Maryland | 4 | — |
| McKader, Sarah | Maryland | 4 | — |
| McKey, Thomas | Maryland | 5 | — |
| McKinley, Alexander | Maryland | 1 | — |
| McKleheany, William | Maryland | 1 | — |