Era
Colonial period, ca. 1600-1775
22
1868-1938
18
Revolution, 1775-1783
14
19th century
12
1792-1881
10
20th century
10
18th century
6
1706-1790
5
1732-1799
5
1743-1826
5
1644-1718
4
To 1775
4
17th century
3
1856-1930
3
1865-1951
3
1566-1607
2
1600-1775
2
1729-1796
2
1734-1806
2
1740-1821
2
1750-1831
2
1751-1836
2
1752-1836
2
1766-1843
2
1775-1783
2
1776 or 1777-1822
2
1780-1847
2
1783-1865
2
1786-1869
2
1787-1854
2
1799-1873
2
1802-1888
2
1809-1865
2
1810-1865
2
1819-1892
2
1839-1912
2
1849-1938
2
1850-1927
2
1852-1936
2
1862-1916
2
Civil War, 1861-1865
2
1377-1446
1
1552?-1618
1
1561-1656
1
1595-1675
1
15th century
1
1614-1697
1
1624-1691
1
1633-1696
1
1648-1690
1
more ...