Era
1815-1870
23
Frederick II, 1740-1786
22
19th century
21
1740-1789
17
1712-1786
16
1789-1900
16
1726-1794
14
1815-1898
14
1740-1815
10
18th century
9
1711-1749
7
1871-1888
7
1740-1786
6
1800-1899
6
1806-1848
6
1918-1933
6
Frederick William III, 1797-1840
6
Frederick William, the Great Elector, 1640-1688
6
1640-1740
5
1648-1789
4
1769-1821
4
1786-1806
4
1848-1870
4
1871-1918
4
20th century
4
1620-1688
3
1688-1740
3
1757-1831
3
17th century
3
Frederick William I, 1713-1740
3
1600-1868
2
1600-1912
2
1603-1714
2
1644-1912
2
1657-1713
2
1759-1830
2
1789-1815
2
1795-1861
2
1806-1815
2
1819-1898
2
1848-1866
2
Elizabeth, 1741-1762
2
Frederick I, 1688-1713
2
Frederick William II, 1786-1797
2
Frederick William IV, 1840-1861
2
Revolution, 1848-1849
2
-1776
1
1485-1603
1
1500-1700
1
1585-1642
1
more ...