Era
20th century
130
19th century
56
21st century
39
18th century
17
1945-
10
17th century
5
1837-1901
5
1899-1977
5
1991-
5
Quaternary
5
16th century
4
1809-1882
4
1828-1910
4
1931-
4
1945-1989
4
1956-
4
1989-
4
Famine, 1845-1852
4
1771-1832
3
1821-1881
3
1854-1900
3
1882-1941
3
1896-1980
3
1960-
3
Easter Rising, 1916
3
1172-1603
2
1689-1801
2
1818-1883
2
1839-1914
2
1865-1939
2
1869-1954
2
1879-1955
2
1883-1917
2
1888-1923
2
1888-1965
2
1898-1956
2
1910-1921
2
1910-1936
2
1918-1933
2
1925-1995
2
1933-1945
2
1945-1964
2
1949-
2
1958-
2
1966-
2
1971-
2
1974-1981
2
1975-
2
1980-
2
1981-1995
2
more ...