In 1138, Ali ibn Yusuf was defeated by Alfonso VII of León, and in the Battle of Ourique ( 1139 ), by Afonso I of Portugal, who thereby won his crown.

Afonso I was the son of Henry of Burgundy and Theresa of León, the natural daughter of King Alfonso VI of León.

The first-born of this union, Infanta Maria of Portugal, married King Alfonso XI of Castile in 1328, at the same time that Afonso IV's heir, Peter I of Portugal, was promised to another Castilian infanta, Constance of Peñafiel.

There has not been a monarch known as Alphonso or Alfonso I of Spain, the first king of that name of the unified Spain being Alfonso XII of Spain ( 1874 – 1885 ).

Several precursor kingdoms have had an Alfonso I.

* Alfonso I of Asturias ( 739 – 757 ).

* Alfonso II of Aragon, aka Alfons I, Count of Barcelona, ( 1162 – 1196 ) known as el Cast ( the Chaste ) or el Trobador ( the Troubadour )

Alfonso II ( 759 – 842 ), called the Chaste, was the king of Asturias from 791 to his death, the son of Fruela I and the Basque Munia.

* Infante Juan Carlos Teresa Silvestre Alfonso of Spain ( 1913 – 1993 ), named heir to the throne and Count of Barcelona, whose son is the current King, Juan Carlos I of Spain.

Alfonso I ( 1073 / 1074 – 8 September 1134 ), called the Battler or the Warrior (), was the king of Aragon and Navarre from 1104 until his death in 1134.

Alfonso the Magnanimous KG ( also Alphonso ; ; 1396 – 27 June 1458 ) was the King of Aragon ( as Alfonso V ), Valencia ( as Alfonso III ), Majorca, Sardinia and Corsica ( as Alfonso II ), and Sicily and Count of Barcelona ( as Alfonso IV ) from 1416 and King of Naples ( as Alfonso I ) from 1442 until his death.

* Alfonso I of Asturias-( 739-757 )

* Alfonso I of Aragon-( 1104 – 1134 )

* Alfonso I d ' Este, Duke of Ferrara during the time of the War of the League of Cambrai.

Alfonso I may refer to:

* Alfonso I of Asturias ( 739 – 757 ), called the Catholic ( el Católico ), was the King of Asturias

* Alfonso I of Aragon ( 1104 – 1134 ), known as Alfonso the Battler

He succeeded to relinquish suzerainty of his cousin Alfonso VII of León, becoming instead a subject of the papacy, as the kingdoms of Sicily and Aragon had done before him.

A denarius of Alfonso's, minted at Jaca, bearing his effigy and the inscription ANFUS-REX ARA-GON ( Anfusus rex Aragonensium, King Alfonso of Aragon ).

Elena Lourie ( 1975 ) suggested instead that it was Alfonso's attempt to neutralize the papacy's interest in a disputed succession — Aragon had been a fief of the Papacy since 1068 — and to fend off Urraca's son from her first marriage, Alfonso VII of Castile, for the Papacy would be bound to press the terms of such a pious testament.

" The result of the crisis produced by the result of Alfonso I's will was a major reorientation of the peninsula's kingdoms: the separation of Aragon and Navarre, the union of Aragon and Catalonia and — a moot point but stressed particularly by some Castilian historians — the affirmation of ' Castilian hegemony ' in Spain " by the rendering of homage for Zaragoza by Alfonso's eventual heir, Ramon Berenguer IV of Barcelona.

Alfonso III of Aragon

Alfonso III ( 1265, Valencia – 18 June 1291 AD ), called the Liberal ( el Liberal ) or the Free ( also " the Frank ," from el Franc ), was the King of Aragon and Count of Barcelona ( as Alfons II ) from 1285.

Alfonso IV, called the Kind ( also the Gentle or the Nice, ) ( 1299, Naples – 24 January 1336 ) was the King of Aragon and Count of Barcelona ( as Alfonso III ) from 1327 to his death.

Manuscript detail of Alfonso V of Aragon.

cy: Alfonso V, brenin Aragon

* Alfonso II of Aragon -- ( 1162 – 1196 )

* Alfonso II, Count of Provence, second son of Alfonso II of Aragon.

The step-son of the deceased king, Alfonso VII of León, as reigning monarch and legitimate descendant of Sancho III of Navarre, put himself forward but garnered no local support.

* 1212 – Battle of Las Navas de Tolosa: after Pope Innocent III calls European knights to a crusade, forces of Kings Alfonso VIII of Castile, Sancho VII of Navarre, Peter II of Aragon and Afonso II of Portugal defeat those of the Berber Muslim leader Almohad, thus marking a significant turning point in the Reconquista and in the medieval history of Spain.

Following the disastrous defeat of Alfonso VIII, King of Castile, at Alarcos, Kings Alfonso IX, of Kingdom of León, and Sancho VII, of Navarre, entered an alliance with the Almohads and invaded Castile in 1196.

* King Alfonso the Battler of Navarre and Aragon launches a raid into Granada.

* Castillan defeat at the battle of Fraga against Muslim troops: Alfonso I of Aragon is killed, and succeeded by Ramiro II in Aragon and Garcia VI in Navarre.

* Alfonso I of Aragon becomes King of Aragon and Navarre.

After the election of Theobald I as king of Navarre, his father tried to arrange a marriage for Alfonso with Theobald's daughter, Blanche of Navarre, but the move was unsuccessful.

His rule was characterised by the renewed supremacy of the western kingdoms of Christian Iberia over the eastern ( Navarre and Aragón ) after the reign of Alfonso the Battler.

When Alfonso the Battler, King of Navarre and Aragón, died without descendants in 1134, he willed his kingdom to the military orders.

The aristocracy of both kingdoms did not accept this and García Ramírez, Count of Monzón was elected in Navarre while Alfonso pretended to the throne of Aragón.

When Pope Eugene III preached the Second Crusade, Alfonso VII, with García Ramírez of Navarre and Ramon Berenguer IV, led a mixed army of Catalans and Franks, with a Genoese – Pisan navy, in a crusade against the rich port city of Almería, which was occupied in October 1147.

Alfonso had married Oneca Sánchez of Pamplona, niece of his ally Jimeno Garcés and daughter of Sancho I of Pamplona by Toda of Navarre.

" The Will of Alfonso I, ' El Batallador ,' King of Aragon and Navarre: A Reassessment.

At first, the murdered king's young son, García, who had fled to Castile, was recognized as titular king by Alfonso VI, while Sancho Ramírez recruited to his side noblemen of Navarre who resented their kingdom falling under Alfonso's influence.

Sancho Ramírez was elected King of Navarre, while he ceded previously contested western provinces of the kingdom to Alfonso.

In Navarre, García Ramírez, a scion of the pre-union royal family of Navarre and protégé of Alfonso VII was chosen king, while in Aragon the choice fell on Ramiro, who suspended his monastic vows to take the crown.

Alfonso was born to Sancho III of Castile and Blanche, daughter of García Ramírez of Navarre, in Soria on 11 November 1155.

Alfonso took the initiative to ally all the major Christian kingdoms of the peninsula — Navarre, León, Portugal, and Aragon — against the Almohads.

The forces of King Alfonso VIII of Castile were joined by the armies of his Christian rivals, Sancho VII of Navarre, Pedro II of Aragon and Afonso II of Portugal in battle against the Almohad rulers of the southern half of the Iberian Peninsula.