Era
20th century
20
1910-1921
10
Easter Rising, 1916
10
1932-1981
6
1691-
4
1882-1941
4
21st century
4
1906-1989
3
1893-1942?
2
1922-
2
1958-
2
1812-1889
1
1864-1916
1
1876-1948
1
1882-1942
1
18th century
1
1902-1944
1
1912-1964
1
1915-1987
1
1924-1949
1
1927-2001
1
1944-
1
19th century
1
Civil War, 1936-1939
1