Era
Elizabeth II, 1952-
42
19th century
40
1810-1865
37
1533-1603
29
20th century
25
1806-1861
23
1945-
22
George VI, 1936-1952
16
1899-1973
14
Elizabeth, 1558-1603
14
1911-1979
12
1835-1915
11
1812-1889
10
16th century
9
20TH CENTURY
5
1558-1603
4
17th century
4
1926-
4
Early modern, 1500-1700
4
1564-1616
3
1780-1845
3
1812-1870
3
1819-1880
3
1830-1894
3
1887-1972
3
18th century
3
1940-
3
1964-1979
3
1979-1997
3
1542-1587
2
1552?-1599
2
1585 or 6-1639
2
16TH CENTURY
2
1821-1910
2
1828-1906
2
1836-1917
2
1862-1952
2
1916-
2
1945-1964
2
1965-
2
1969-
2
James I, 1603-1625
2
Stuarts, 1603-1714
2
-1888
1
1437?-1492
1
1533-1588
1
1566-1601
1
1603-1649
1
1713-1768
1
1720-1800
1
more ...