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| YEAR | DATE | EVENT | GOVERNOR |
| 1632 | 30 june | UK colony | Cecil Calvert, Baron Baltimore |
| 1675 | 30 november | Charles I Calvert, Baron Baltimore | |
| 1691 | 27 june | UK Royal province | Sir Lionel Copley |
| 1693 | 6 september | Thomas Lawrence (I) | |
| 1693 | Sir Edmund Andros | ||
| 1694 | Thomas Lawrence (II) | ||
| 1694 | Francis Nicholson | ||
| 1699 | Nathaniel Blakistone | ||
| 1702 | Thomas Tench | ||
| 1704 | John Seymour | ||
| 1709 | Edward Lloyd | ||
| 1714 | may | John Hart | |
| 1715 | may | UK colony | Benedict Leonard Calvert, Baron Baltimore |
| 1715 | Charles II Leonard Calvert, Baron Baltimore | ||
| 1751 | Frederick Leonard Calvert, Baron Baltimore | ||
| 1771 | Henry Hanford | ||
| 1777 | 5 february | State of Maryland | |
| 1788 | 28 april | 7^ state of U.S.A. |