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| YEAR | DATE | EVENT | HEAD OF STATE | |
| 852 | Count - dinasty Cantabria | earl Rodrigo | ||
| 872 | earl Diego | |||
| 885 | dinasty Castiglia | earl Nuno Nunez | ||
| 909 | earl Gonzalo | |||
| 932 | earl Ferdinand | |||
| 968 | earl Garcia | |||
| 1006 | earl Sancio Garcia | |||
| 1028 | dinasty Iniga | earl Sancio III King of Navarra | ||
| 1035 | february | earl Ferdinand I King of Leon | ||
| 1036 | Kingdom | king Ferdinand I King of Leon | ||
| 1065 | 27 december | king Sancio II | ||
| 1072 | 5 october | king Alfonso VI King of Leon | ||
| 1109 | 29 june | regina Urraca Queen of Leon | ||
| 1126 | 10 march | dinasty Borgogna-Ivrea | king Alfonso VII King of Leon | |
| 1157 | 21 august | king Sancio III | ||
| 1158 | 1 september | king Alfonso VIII | ||
| 1214 | 5 august | king Henry I | ||
| 1217 | 6 june | king Ferdinand III | ||
| 1252 | 30 may | king Alfonso X | ||
| 1284 | 4 april | king Sancio IV | ||
| 1295 | 25 april | king Ferdinand IV | ||
| 1312 | 7 september | king Alfonso XI | ||
| 1350 | 26 march | king Pietro I | ||
| 1369 | 23 march | king Henry II | ||
| 1379 | 29 may | king John I | ||
| 1390 | 9 october | king Henry III | ||
| 1406 | 29 december | king John II | ||
| 1454 | 21 july | king Henry IV | ||
| 1474 | 14 december | regina Isabel I | ||
| 1504 | 26 november | queen Isabel I and king Filippo I | ||
| 1506 | 25 settmbre | king Ferdinand II king of Aragona | ||
| 1512 | 16 july | Union to Aragona into Kingdom of Spain | ||
| 1983 | 2 march | Spanish self-governing Region |