Cyfnod
16th century
88
17th century
60
18th century
48
20th century
30
1891-1942
20
1933-1945
20
843-1517
19
1483-1546
18
1818-1894
18
19th century
18
1098-1179
15
1207-1231
15
Middle Ages, 600-1500
14
1898-1962
12
1876-1945
7
1491-1556
6
1811-1877
6
1521-1597
5
Modern period, 1500-
5
1225?-1274
4
1256-1302
4
15th century
4
1682-1744
4
1928-
4
To 1500
4
1491-1551
3
1504-1575
3
1602-1680
3
1673-1716
3
1774-1824
3
17th centuy
3
1835-1914
3
1885-1935
3
1897-1978
3
d. 1327
3
1484-1531
2
1490
2
1634-1712
2
1642-1704
2
1797-1879
2
1812-1857
2
1812-1891
2
1829-1891
2
1842-1924
2
1862-1945
2
1866-1871
2
1881-1963
2
1904- 1984
2
1905-1988
2
1907-1943
2
rhagor ...