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| YEAR | DATE | EVENT | HEAD OF STATE |
| 866 | Kingdom united to Kingdom of Asturias | ||
| 924 | dinasty Balti | king Alfonso IV | |
| 931 | king Ramiro II | ||
| 950 | 5 january | king Ordono III | |
| 955 | king Sancio I (I) | ||
| 958 | king Ordono IV | ||
| 960 | king Sancio I (II) | ||
| 967 | king Ramiro III | ||
| 982 | king Bermudo II | ||
| 999 | king Alfonso V | ||
| 1027 | king Bermudo III | ||
| 1037 | 22 july | dinasty Iniga | king Ferdinando I |
| 1065 | 27 december | king Alfonso VI | |
| 1109 | 29 june | regina Urraca | |
| 1126 | 10 march | dinasty Borgogna-Ivrea | king Alfonso VII |
| 1157 | 21 august | king Ferdinando II | |
| 1188 | 21 january | king Alfonso IX |
| YEAR | DATE | EVENT | HEAD OF STATE |
| 1230 | september | Union to Kingdom of Castiglia | |
| 1982 | 16 august | Spanish self-governing Region |