The battle secured Afonso Henriques's control over Portugal, directly leading to the foundation of the Kingdom of Portugal.
Key Facts
- Date
- 24 June 1128
- Location
- Near Guimarães, Portugal
- Victor
- Afonso Henriques
- Defeated commanders
- Teresa of Portugal and Fernão Peres de Trava
- Title adopted after battle
- Prince of Portugal
- Royal recognition year
- 1143
Location
Cause → Event → Consequence
A power struggle arose in the County of Portugal between the young nobleman Afonso Henriques and his mother Teresa of Portugal, who governed the county alongside her Galician lover Fernão Peres de Trava. Afonso sought to assert his own authority and free Portugal from the influence of Trava and the Kingdom of Galicia.
On 24 June 1128, near Guimarães, Portuguese forces loyal to Afonso Henriques clashed with forces commanded by Teresa of Portugal and Fernão Peres de Trava. Afonso's forces prevailed, decisively ending the regency of his mother and removing Galician influence over the county.
Following his victory, Afonso Henriques styled himself Prince of Portugal, effectively beginning Portuguese self-rule. He later claimed the title King of Portugal in 1139 and received recognition from neighbouring kingdoms by 1143, marking the formal establishment of the Kingdom of Portugal.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Afonso Henriques.
Side B
1 belligerent
Teresa of Portugal, Fernão Peres de Trava.