Era
20th century
122
1910-1921
61
19th century
48
Civil War, 1861-1865
36
1841-1867
34
21st century
20
18th century
17
1901-1910
16
War of Independence, 1919-1921
16
1858-1949
15
1837-1901
13
1922-
13
17th century
12
1862-1915
11
1801-1872
9
1760-1820
8
1854-1932
8
1864-1916
8
1881-1916
8
Easter Rising, 1916
8
To 1500
8
1875-1915
7
1877-1954
7
1922-1949
7
1970-1980
7
1980-1990
7
Civil War, 1922-1923
7
1769-1821
5
1856-1918
5
Middle Ages, 600-1500
5
1769-1852
4
1790-1860
4
1792-1878
4
1830-1840
4
1835-1910
4
1870-1922
4
1879-1916
4
1922-23
4
d. 1845
4
1773-1853
3
1828-1909
3
1842-1910
3
1856-1927
3
1856-1950
3
1863-1945
3
1878-1916
3
1880-1959
3
1890-1900
3
1890-1922
3
1994-
3
more ...