Era
20th century
1,477
19th century
754
Civil War, 1861-1865
460
21st century
156
1911-1920
144
1901-1910
95
1917-1963
72
1839-1876
71
1850-1904
69
18th century
65
1888-1953
63
1896-1940
59
1921-1930
54
1866-1895
46
1931-1940
46
Revolution, 1775-1783
36
To 1901
36
1837-1901
30
Famine, 1845-1852
29
1961-1963
27
1887-1986
26
1894-1973
26
1941-1950
26
1925-1968
25
Easter Rising, 1916
23
1945-1989
22
373?-463?
22
Colonial period, ca. 1600-1775
22
1910-1921
21
1945-
21
1951-
21
To 1848
20
1933-1945
19
Fenian Invasions, 1866-1870
19
1831-1888
18
1865-1950
18
1903-1977
18
1831-1890
16
Rebellion of 1798
16
1863-1950
15
1969-1994
15
1823-1867
14
1873-1944
14
1900-1948
14
1908-1957
14
1928-
14
To 1803
14
1809-1865
13
1860-1890
13
1865-
13
more ...