The Castilian Succession War: The Standoff at…
1475 CE
The Castilian Succession War: The Standoff at Toro and Portugal’s Alliance with France (1475)
By July 1475, the War of the Castilian Succession was at a critical phase. Ferdinand of Aragon, supporting his wife Isabella of Castile, concentrated an army at Tordesillas with the goal of forcing a decisive battle against Afonso V of Portugal, who was campaigning in support of Joanna la Beltraneja.
The Standoff at Toro (July 1475)
- On July 15, Ferdinand marched his army toward Toro, hoping to confront Afonso V in open battle.
- By July 19, his forces reached the city, but Afonso V avoided direct combat, preferring a defensive stance.
- Ferdinand, unable to maintain a prolonged siege due to a lack of resources, was forced to withdraw to Tordesillas and eventually disband his army.
- This allowed Afonso V to strengthen his position in Toro, a strategically significant city in the war.
Portuguese-French Alliance: The Treaty of 1475
- Seeking additional military aid, Afonso V secured a treaty of alliance with Louis XI of France on September 23, 1475.
- France and Aragon were traditional rivals, competing for dominance in Italy and Roussillon, making Portugal a natural ally for France.
- Afonso hoped that French intervention in Iberia would tip the war in Joanna’s favor.
Portuguese Control of Toro and the Move to Arévalo
- With the castle of Toro surrendering to Afonso V, the city became a Portuguese stronghold.
- However, instead of advancing aggressively, Afonso retreated to Arévalo, waiting for French reinforcements that never arrived.
- This delay allowed Isabella and Ferdinand to regroup and consolidate their power, ultimately leading to their victory in the war.
Impact on the War
- Although Afonso V held Toro, his failure to press the advantage weakened his campaign.
- Louis XI’s treaty did not result in direct military aid, leaving Portugal isolated against Castile and Aragon.
- The next year, the war reached its climactic moment at the Battle of Toro (March 1, 1476), which, despite being militarily inconclusive, marked the beginning of the end for Afonso’s claim to Castile.
The events of 1475, particularly the standoff at Toro and Portugal’s failed reliance on French support, demonstrated how diplomatic miscalculations and military inaction ultimately cost Afonso V the Castilian throne.