10th Century
| Year | Date | Event |
|---|---|---|
| 909 | Alfonso III of Asturias is deposed by his sons yet also proclaimed Emperor. | |
| 910 | Alfonso III of Asturias dies and his kingdom is divided among his sons into the dependent kingdoms of Astúrias, León and Galicia. | |
| Ordoño II becomes King of Galicia with the support of the Count of Portugal. | ||
| 911 | Count Hermenegildo Guterres of Coimbra, successor of Count Hermenegildo Mendes, dies and his son Arias Mendes becomes Count of Coimbra. | |
| 912 | Abd al-Rahman III becomes the Umayyad Emir of Córdoba. | |
| 913 | An expedition commanded by Ordoño II, then vassal king of Galicia, into Muslim territory takes Évora from the Muslims. | |
| 914 | Ordoño II of Galicia, becomes King of León, after the death of his brother García I of León. | |
| The capital city of the Kingdom of Asturias is moved from Oviedo to León, from now on Kingdom of León. | ||
| 916 | Ordoño II of León is defeated by the Emir Abd al-Rahman III in Valdejunquera. | |
| 918 | Battle of Talavera where Muslims under Abd al-Rahman III defeat the Christians. | |
| Pope John X recognizes the orthodoxy and legitimacy of the Visigothic Liturgy maintained in the Mozarabic rite. | ||
| 924 | Fruela II becomes King of León. | |
| 925 | Sancho Ordonhes, son of Ordoño II of León, becomes vassal king of Galicia until 929. | |
| Alfonso IV becomes King of León. | ||
| Ramiro II, son of Ordoño II of León, was the first to bear the title King of Portuguese Land. | ||
| 926 | Ramiro II takes residency in the city of Viseu. | |
| Mendo I Gonçalves (also known as Hermenegildo Gonçalves, son of Count Gonçalo of Galicia) marries Mumadona Dias (daughter of Onega Lucides and Diogo Fernandes) and becomes Count of Portugal. | ||
| The Umayyad Emir Abd al-Rahman III, faced with the threat of invasion by the Fatimids, proclaims himself Caliph of Córdoba. Under the reign of Abd al-Rahman III Muslim Al-Andalus reaches its greatest height before its slow decline over the next four centuries. | ||
| 928 | Gonçalo Moniz, grandson of Count Arias Mendes of Coimbra, becomes Count of Coimbra. | |
| 929 | Abd al-Rahman III proclaims himself Caliph in Córdoba and transforms the Emirate of Córdoba into an independent caliphate no longer under even theoretical control from Baghdad. | |
| 930 | Ramiro II leaves his residency in Viseu. | |
| 931 | Ramiro II becomes King of León. | |
| 938 | First document where the word Portugal is written in its present form. | |
| 946 | The county of Castile becomes independent. | |
| 950 | Countess Mumadona Dias of Portugal divides amongst her sons her the vast domains, upon the death of her husband Count Mendo I Gonçalves. | |
| Gonçalo I Mendes, son of Mumadona Dias and Mendo I Gonçalves, becomes Count of Portugal. | ||
| Ordoño III becomes King of León. | ||
| 953 | Big Moorish incursion in Galicia. | |
| 955 | Ordoño III of León attacks Lisbon. | |
| 956 | Sancho I becomes King of León. | |
| 958 | Sancho I of León is deposed. | |
| Ordoño IV becomes King of León. | ||
| 959 | Countess Mumadona Dias donates vast estates to the Monastery of St. Mamede in Guimarães. | |
| 960 | Sancho I of León is reinstated as King of León. | |
| 961 | Al-Hakam II becomes Umayyad Caliph of Córdoba. | |
| 962 | Count Gonçalo I Mendes of Portugal rebels against Sancho I of León. | |
| 966 | Count Gonçalo Moniz of Coimbra rebels against Sancho I of León. | |
| Vikings raid Galicia and kill the bishop of Santiago de Compostela in battle, but his successor St. Rudesind rallies the local forces and kills the Viking King Gundered. | ||
| 967 | Ramiro III becomes King of León. | |
| 971 | Another minor Viking raid in Galicia. | |
| 976 | Caliph Al-Hakam II dies, and Al-Mansur Ibn Abi Aamir takes over in the name of his protégé Hisham II, becoming a military dictator usurping caliphal powers and launching a big number of offensive campaigns against the Christians. | |
| 981 | Count Gonçalo Moniz of Coimbra dies. | |
| 982 | Bermudo II becomes King of León, having been acclaimed by the Counts of Galicia and anointed in Santiago de Compostela. | |
| 987 | Al-Mansur Ibn Abi Aamir lays waste to the now Christian Coimbra. | |
| Al-Mansur Ibn Abi Aamir seizes the castles north of the Douro River, and arrives at the city of Santiago de Compostela. The city had been evacuated and Al-Mansur burns it to the ground and destroys the Church of Santiago. | ||
| Count Gonçalo I Mendes takes the personal title Magnus Dux Portucalensium (Grand-Duke of Portucale) and rebels against King Bermudo II of León, being defeated. | ||
| 999 | Alfonso V becomes King of León. | |
| Mendo II Gonçalves, son (or grandson?) of Gonçalo I Mendes and Tuta, becomes Count of Portugal. | ||
| Countess Mumadona Dias dies. |
Read more about this topic: Timeline Of Portuguese History
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