Census records of free Black heads of household in the antebellum South
| Name | State | Num In Family | Notes |
|---|---|---|---|
| Mark, Sharp | New York | — | — |
| Marsh | Massachusetts | — | — |
| Marsh, Samuel | Massachusetts | — | — |
| Marshal, Prince | Pennsylvania | — | — |
| Marshall, John | Virginia | — | — |
| Martain, Prince (free Negro) | Delaware | 2 | — |
| Martin & Robin (free) | South Carolina | — | — |
| Martin, Absalom | North Carolina | — | — |
| Martin, Dan | New Hampshire | 4 | — |
| Martin, Jacob | Pennsylvania | — | — |
| Martin, Jesse | North Carolina | — | — |
| Martin, John | North Carolina | — | — |
| Martin, Joseph | Pennsylvania | — | — |
| Martin, Mark (Negro) | Rhode Island | — | — |
| Martin, Primus | New York | — | — |
| Martin, Robert | North Carolina | — | — |
| Martin, William | Virginia | — | — |
| Martingale, James | Maryland | 5 | — |
| Mary | New York | — | — |
| Mary | New York | — | — |
| Mary | New York | — | — |
| Mary (free) | New York | — | — |
| Mary (free) | New York | — | — |
| Mary (free) | South Carolina | — | — |
| Mary (free) | South Carolina | — | — |