Era
19th century
21
20th century
15
1800-1837
6
1970-1980
4
1837-1901
3
18th century
3
1910-1921
3
1760-1820
2
1801-1810
2
1831-1840
2
1841-1850
2
1887-1961
2
1960-1970
2
Famine, 1845-1852
2
1685-1759
1
1750-1837
1
1791-1800
1
1809-1890
1
1811-1820
1
1820-1893
1
1821-1830
1
1823
1
1826-1911
1
1839
1
1851-1929
1
1855-1929
1
1863-1938
1
1865-1945
1
1880-1950
1
1884-1951
1
1917-1992
1
1920-1930
1
1920-1991
1
1921-1930
1
1922-
1
1950-1960
1
Carboniferous
1
Quaternary
1
War of Independence, 1919-1921
1